n = 10; xs = 1 + 9*rand(n,1); ys = .5 .* xs.^2 + 2 .* xs + randn(n,1); plot( xs, ys, '*' ) ys = .5 .* xs.^2 + 2 .* xs + 5*randn(n,1); plot( xs, ys, '*' ) edit least close all plot {Error using plot Not enough input arguments. } plot( xs, ys, '*' ) plot( xs, ys, '*' ) close all plot( xs, ys, '*' ) hold on plot( xs, ys, '*' ) plot( ys, xs, '*' ) hold off plot( ys, xs, '*' ) least k = 7.2065 -7.5870 least least least M M = 1.9609 1.0000 6.8838 1.0000 5.4476 1.0000 8.0115 1.0000 7.4353 1.0000 9.1335 1.0000 9.0183 1.0000 4.0075 1.0000 7.2887 1.0000 2.7803 1.0000 1.2749 1.0000 7.6967 1.0000 5.5002 1.0000 5.3193 1.0000 9.1425 1.0000 6.4888 1.0000 6.5590 1.0000 8.7350 1.0000 8.2494 1.0000 6.1905 1.0000 2.6463 1.0000 3.1594 1.0000 8.9786 1.0000 1.2581 1.0000 5.4091 1.0000 2.5113 1.0000 9.8081 1.0000 7.4143 1.0000 5.5042 1.0000 5.2398 1.0000 1.5366 1.0000 7.1377 1.0000 1.3819 1.0000 1.6430 1.0000 5.6948 1.0000 1.8706 1.0000 8.3633 1.0000 8.3579 1.0000 7.5020 1.0000 2.3488 1.0000 6.9364 1.0000 5.6674 1.0000 9.7568 1.0000 6.8409 1.0000 8.2030 1.0000 5.0842 1.0000 4.8915 1.0000 8.4278 1.0000 1.7512 1.0000 2.1985 1.0000 2.5605 1.0000 4.5184 1.0000 8.4824 1.0000 8.2303 1.0000 1.5442 1.0000 4.5933 1.0000 5.7419 1.0000 4.7512 1.0000 6.9117 1.0000 6.6518 1.0000 3.6279 1.0000 4.8849 1.0000 1.1394 1.0000 9.8566 1.0000 2.5045 1.0000 1.9559 1.0000 4.3517 1.0000 2.7831 1.0000 5.4072 1.0000 4.0554 1.0000 9.5647 1.0000 9.2830 1.0000 1.4741 1.0000 7.6407 1.0000 3.4221 1.0000 4.8055 1.0000 5.9308 1.0000 9.4846 1.0000 4.7597 1.0000 9.8475 1.0000 3.7131 1.0000 7.3099 1.0000 6.9970 1.0000 5.8521 1.0000 7.2829 1.0000 6.9988 1.0000 2.6032 1.0000 2.1521 1.0000 9.9917 1.0000 2.5401 1.0000 1.2934 1.0000 6.0508 1.0000 8.9368 1.0000 7.0226 1.0000 2.7139 1.0000 4.3202 1.0000 5.1465 1.0000 9.8347 1.0000 2.4076 1.0000 8.6997 1.0000 M = [ xs.^2 M ] M = 3.8450 1.9609 1.0000 47.3869 6.8838 1.0000 29.6760 5.4476 1.0000 64.1836 8.0115 1.0000 55.2842 7.4353 1.0000 83.4205 9.1335 1.0000 81.3298 9.0183 1.0000 16.0598 4.0075 1.0000 53.1253 7.2887 1.0000 7.7300 2.7803 1.0000 1.6253 1.2749 1.0000 59.2387 7.6967 1.0000 30.2522 5.5002 1.0000 28.2949 5.3193 1.0000 83.5853 9.1425 1.0000 42.1045 6.4888 1.0000 43.0204 6.5590 1.0000 76.2999 8.7350 1.0000 68.0527 8.2494 1.0000 38.3222 6.1905 1.0000 7.0029 2.6463 1.0000 9.9817 3.1594 1.0000 80.6154 8.9786 1.0000 1.5827 1.2581 1.0000 29.2585 5.4091 1.0000 6.3069 2.5113 1.0000 96.1993 9.8081 1.0000 54.9711 7.4143 1.0000 30.2967 5.5042 1.0000 27.4555 5.2398 1.0000 2.3610 1.5366 1.0000 50.9474 7.1377 1.0000 1.9096 1.3819 1.0000 2.6995 1.6430 1.0000 32.4313 5.6948 1.0000 3.4990 1.8706 1.0000 69.9454 8.3633 1.0000 69.8549 8.3579 1.0000 56.2793 7.5020 1.0000 5.5168 2.3488 1.0000 48.1143 6.9364 1.0000 32.1189 5.6674 1.0000 95.1946 9.7568 1.0000 46.7982 6.8409 1.0000 67.2888 8.2030 1.0000 25.8489 5.0842 1.0000 23.9270 4.8915 1.0000 71.0282 8.4278 1.0000 3.0668 1.7512 1.0000 4.8336 2.1985 1.0000 6.5561 2.5605 1.0000 20.4163 4.5184 1.0000 71.9514 8.4824 1.0000 67.7375 8.2303 1.0000 2.3847 1.5442 1.0000 21.0986 4.5933 1.0000 32.9692 5.7419 1.0000 22.5739 4.7512 1.0000 47.7721 6.9117 1.0000 44.2459 6.6518 1.0000 13.1613 3.6279 1.0000 23.8619 4.8849 1.0000 1.2982 1.1394 1.0000 97.1520 9.8566 1.0000 6.2726 2.5045 1.0000 3.8257 1.9559 1.0000 18.9372 4.3517 1.0000 7.7455 2.7831 1.0000 29.2377 5.4072 1.0000 16.4466 4.0554 1.0000 91.4830 9.5647 1.0000 86.1739 9.2830 1.0000 2.1730 1.4741 1.0000 58.3806 7.6407 1.0000 11.7106 3.4221 1.0000 23.0930 4.8055 1.0000 35.1748 5.9308 1.0000 89.9583 9.4846 1.0000 22.6547 4.7597 1.0000 96.9727 9.8475 1.0000 13.7871 3.7131 1.0000 53.4345 7.3099 1.0000 48.9587 6.9970 1.0000 34.2475 5.8521 1.0000 53.0414 7.2829 1.0000 48.9825 6.9988 1.0000 6.7766 2.6032 1.0000 4.6317 2.1521 1.0000 99.8345 9.9917 1.0000 6.4521 2.5401 1.0000 1.6729 1.2934 1.0000 36.6122 6.0508 1.0000 79.8664 8.9368 1.0000 49.3166 7.0226 1.0000 7.3652 2.7139 1.0000 18.6646 4.3202 1.0000 26.4868 5.1465 1.0000 96.7221 9.8347 1.0000 5.7968 2.4076 1.0000 75.6849 8.6997 1.0000 least least edit filter edit myfilter least myfilter myfilter {Undefined function or variable 'Pi'. Error in myfilter (line 8) axes([0 2*pi, -Pi/2, Pi]) } myfilter {Error using axes Handles of type Root cannot be made the current Axes. Error in myfilter (line 8) axes([0 2*pi, -pi/2, pi]) } myfilter myfilter matlab.internal.language.introspective.errorDocCallback('myfilter', '/Users/pauldj/works/courses/LSC/LSC-17/FPA/myfilter.m', 8) myfilter myfilter myfilter f = Columns 1 through 3 1.7321 + 0.0000i 4.1113 - 4.0280i -0.9404 - 4.9470i Columns 4 through 6 -2.0966 + 0.7455i -1.3388 + 0.2200i -1.2031 + 0.0000i Columns 7 through 9 -1.3388 - 0.2200i -2.0966 - 0.7455i -0.9404 + 4.9470i Column 10 4.1113 + 4.0280i myfilter myfilter myfilter myfilter myfilter myfilter myfilter {Undefined function or variable 'iffshift'. Error in myfilter (line 23) ifft(iffshift(f)) } myfilter ans = Columns 1 through 3 0.0290 + 0.0002i 0.2674 + 0.0002i 0.5759 - 0.0004i Columns 4 through 6 0.8399 + 0.0005i 1.1082 - 0.0004i 1.3655 + 0.0001i Columns 7 through 9 1.6001 + 0.0003i 1.8256 - 0.0005i 2.0256 + 0.0005i Columns 10 through 12 2.2055 - 0.0003i 2.3633 - 0.0000i 2.4927 + 0.0003i Columns 13 through 15 2.5991 - 0.0005i 2.6765 + 0.0004i 2.7264 - 0.0002i Columns 16 through 18 2.7499 - 0.0001i 2.7442 + 0.0004i 2.7130 - 0.0004i Columns 19 through 21 2.6554 + 0.0003i 2.5724 - 0.0001i 2.4673 - 0.0002i Columns 22 through 24 2.3395 + 0.0003i 2.1928 - 0.0003i 2.0290 + 0.0002i Columns 25 through 27 1.8494 + 0.0000i 1.6584 - 0.0002i 1.4570 + 0.0003i Columns 28 through 30 1.2485 - 0.0002i 1.0364 + 0.0001i 0.8216 + 0.0001i Columns 31 through 33 0.6086 - 0.0002i 0.3991 + 0.0002i 0.1950 - 0.0001i Columns 34 through 36 0.0003 - 0.0000i -0.1850 + 0.0002i -0.3574 - 0.0002i Columns 37 through 39 -0.5156 + 0.0001i -0.6591 - 0.0000i -0.7851 - 0.0001i Columns 40 through 42 -0.8943 + 0.0002i -0.9854 - 0.0001i -1.0576 + 0.0000i Columns 43 through 45 -1.1124 + 0.0001i -1.1481 - 0.0002i -1.1667 + 0.0001i Columns 46 through 48 -1.1688 - 0.0001i -1.1542 - 0.0001i -1.1261 + 0.0002i Columns 49 through 51 -1.0840 - 0.0002i -1.0304 + 0.0001i -0.9674 + 0.0001i Columns 52 through 54 -0.8954 - 0.0002i -0.8179 + 0.0002i -0.7355 - 0.0002i Columns 55 through 57 -0.6506 + 0.0000i -0.5655 + 0.0002i -0.4807 - 0.0003i Columns 58 through 60 -0.3994 + 0.0002i -0.3224 - 0.0001i -0.2509 - 0.0001i Columns 61 through 63 -0.1871 + 0.0003i -0.1311 - 0.0003i -0.0844 + 0.0002i Columns 64 through 66 -0.0478 - 0.0000i -0.0210 - 0.0002i -0.0053 + 0.0004i Columns 67 through 69 -0.0000 - 0.0004i -0.0051 + 0.0002i -0.0205 + 0.0001i Columns 70 through 72 -0.0451 - 0.0003i -0.0784 + 0.0004i -0.1198 - 0.0004i Columns 73 through 75 -0.1673 + 0.0001i -0.2208 + 0.0002i -0.2782 - 0.0004i Columns 76 through 78 -0.3379 + 0.0005i -0.3999 - 0.0003i -0.4606 + 0.0000i Columns 79 through 81 -0.5203 + 0.0003i -0.5773 - 0.0005i -0.6286 + 0.0005i Columns 82 through 84 -0.6760 - 0.0003i -0.7150 - 0.0001i -0.7465 + 0.0004i Columns 85 through 87 -0.7705 - 0.0005i -0.7823 + 0.0004i -0.7870 - 0.0002i Columns 88 through 90 -0.7794 - 0.0002i -0.7607 + 0.0005i -0.7347 - 0.0005i Columns 91 through 93 -0.6931 + 0.0004i -0.6465 - 0.0000i -0.5886 - 0.0003i Columns 94 through 96 -0.5186 + 0.0005i -0.4503 - 0.0005i -0.3625 + 0.0003i Columns 97 through 99 -0.2794 + 0.0001i -0.1944 - 0.0004i -0.0794 + 0.0005i Column 100 -0.0282 - 0.0005i myfilter myfilter myfilter f = Columns 1 through 3 -0.4431 + 0.0000i -0.4605 - 0.0130i -0.5256 - 0.0301i Columns 4 through 6 -0.7082 - 0.0624i -1.6214 - 0.1987i 1.5324 + 0.2504i Columns 7 through 9 0.3604 + 0.0782i 0.1477 + 0.0442i 0.0604 + 0.0285i Columns 10 through 12 0.0135 + 0.0189i -0.0157 + 0.0120i -0.0355 + 0.0066i Columns 13 through 15 -0.0500 + 0.0020i -0.0611 - 0.0020i -0.0701 - 0.0056i Columns 16 through 18 -0.0777 - 0.0090i -0.0843 - 0.0122i -0.0902 - 0.0153i Columns 19 through 21 -0.0958 - 0.0184i -0.1012 - 0.0214i -0.1064 - 0.0244i Columns 22 through 24 -0.1118 - 0.0275i -0.1173 - 0.0306i -0.1231 - 0.0338i Columns 25 through 27 -0.1293 - 0.0371i -0.1360 - 0.0405i -0.1433 - 0.0441i Columns 28 through 30 -0.1515 - 0.0479i -0.1606 - 0.0519i -0.1709 - 0.0562i Columns 31 through 33 -0.1826 - 0.0608i -0.1962 - 0.0658i -0.2120 - 0.0712i Columns 34 through 36 -0.2307 - 0.0772i -0.2529 - 0.0838i -0.2797 - 0.0912i Columns 37 through 39 -0.3124 - 0.0997i -0.3530 - 0.1093i -0.4044 - 0.1205i Columns 40 through 42 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 43 through 45 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 46 through 48 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 49 through 51 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 52 through 54 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 55 through 57 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 58 through 60 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 61 through 63 -0.5585 + 0.1498i -0.4707 + 0.1338i -0.4044 + 0.1205i Columns 64 through 66 -0.3530 + 0.1093i -0.3124 + 0.0997i -0.2797 + 0.0912i Columns 67 through 69 -0.2529 + 0.0838i -0.2307 + 0.0772i -0.2120 + 0.0712i Columns 70 through 72 -0.1962 + 0.0658i -0.1826 + 0.0608i -0.1709 + 0.0562i Columns 73 through 75 -0.1606 + 0.0519i -0.1515 + 0.0479i -0.1433 + 0.0441i Columns 76 through 78 -0.1360 + 0.0405i -0.1293 + 0.0371i -0.1231 + 0.0338i Columns 79 through 81 -0.1173 + 0.0306i -0.1118 + 0.0275i -0.1064 + 0.0244i Columns 82 through 84 -0.1012 + 0.0214i -0.0958 + 0.0184i -0.0902 + 0.0153i Columns 85 through 87 -0.0843 + 0.0122i -0.0777 + 0.0090i -0.0701 + 0.0056i Columns 88 through 90 -0.0611 + 0.0020i -0.0500 - 0.0020i -0.0355 - 0.0066i Columns 91 through 93 -0.0157 - 0.0120i 0.0135 - 0.0189i 0.0604 - 0.0285i Columns 94 through 96 0.1477 - 0.0442i 0.3604 - 0.0782i 1.5324 - 0.2504i Columns 97 through 99 -1.6214 + 0.1987i -0.7082 + 0.0624i -0.5256 + 0.0301i Column 100 -0.4605 + 0.0130i myfilter f = Columns 1 through 3 -0.4431 + 0.0000i -0.4605 - 0.0130i -0.5256 - 0.0301i Columns 4 through 6 -0.7082 - 0.0624i -1.6214 - 0.1987i 1.5324 + 0.2504i Columns 7 through 9 0.3604 + 0.0782i 0.1477 + 0.0442i 0.0604 + 0.0285i Columns 10 through 12 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 13 through 15 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 16 through 18 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 19 through 21 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 22 through 24 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 25 through 27 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 28 through 30 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 31 through 33 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 34 through 36 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 37 through 39 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 40 through 42 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 43 through 45 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 46 through 48 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 49 through 51 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 52 through 54 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 55 through 57 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 58 through 60 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 61 through 63 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 64 through 66 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 67 through 69 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 70 through 72 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 73 through 75 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 76 through 78 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 79 through 81 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 82 through 84 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 85 through 87 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 88 through 90 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 91 through 93 -0.0157 - 0.0120i 0.0135 - 0.0189i 0.0604 - 0.0285i Columns 94 through 96 0.1477 - 0.0442i 0.3604 - 0.0782i 1.5324 - 0.2504i Columns 97 through 99 -1.6214 + 0.1987i -0.7082 + 0.0624i -0.5256 + 0.0301i Column 100 -0.4605 + 0.0130i myfilter f = Columns 1 through 3 -0.7345 + 0.0000i -0.7519 - 0.0236i -0.8169 - 0.0514i Columns 4 through 6 -0.9994 - 0.0945i -1.9123 - 0.2416i 1.2417 + 0.1967i Columns 7 through 9 0.0700 + 0.0134i -0.1422 - 0.0318i -0.2290 - 0.0588i Columns 10 through 12 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 13 through 15 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 16 through 18 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 19 through 21 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 22 through 24 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 25 through 27 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 28 through 30 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 31 through 33 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 34 through 36 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 37 through 39 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 40 through 42 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 43 through 45 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 46 through 48 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 49 through 51 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 52 through 54 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 55 through 57 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 58 through 60 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 61 through 63 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 64 through 66 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 67 through 69 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 70 through 72 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 73 through 75 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 76 through 78 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 79 through 81 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 82 through 84 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 85 through 87 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 88 through 90 0.0000 + 0.0000i 0.0000 + 0.0000i 0.0000 + 0.0000i Columns 91 through 93 -0.3040 + 0.0988i -0.2755 + 0.0800i -0.2290 + 0.0588i Columns 94 through 96 -0.1422 + 0.0318i 0.0700 - 0.0134i 1.2417 - 0.1967i Columns 97 through 99 -1.9123 + 0.2416i -0.9994 + 0.0945i -0.8169 + 0.0514i Column 100 -0.7519 + 0.0236i sqrt(sqrt(sqrt(sqrt((((2^2)^2)^2)^2) sqrt(sqrt(sqrt(sqrt((((2^2)^2)^2)^2) | {Error: Expression or statement is incorrect--possibly unbalanced (, {, or [. } sqrt(sqrt(sqrt(sqrt((((2^2)^2)^2)^2))))) sqrt(sqrt(sqrt(sqrt((((2^2)^2)^2)^2))))) | {Error: Unbalanced or unexpected parenthesis or bracket. } sqrt(sqrt(sqrt(sqrt( ((((2^2)^2)^2)^2))))) ans = 2 sqrt(sqrt(sqrt(sqrt( 2^(2^(2^(2^2)) ))))) ans = Inf [pi pi pi pi]*[1 -1 1 -1]' ans = 0 [pi [pi pi] pi]*[1 -1 1 -1]' ans = 0 [pi [[pi [pi]] pi]]*[1 -1 1 -1]' ans = 0 edit Mv Mv( [1 2 3 4]' ) ans = 17 17 43 43 Mv( [1 2 3 4]' ) Elapsed time is 0.000020 seconds. Elapsed time is 0.000046 seconds. {Error using - Matrix dimensions must agree. Error in Mv (line 20) norm( y - y2 ) } Mv( [1 2 3 4]' ) Elapsed time is 0.000006 seconds. Elapsed time is 0.000041 seconds. ans = 4 1 ans = 1 4 {Error using - Matrix dimensions must agree. Error in Mv (line 23) norm( y - y2 ) } Mv( [1 2 3 4]' ) Elapsed time is 0.000008 seconds. Elapsed time is 0.000197 seconds. ans = 4 1 ans = 4 1 ans = 0 ans = 17 17 43 43 Mv( rand(100,1) ) Elapsed time is 0.000742 seconds. Elapsed time is 0.000063 seconds. ans = 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 81.1268 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 213.1778 Mv( rand(100,1) ); Elapsed time is 0.000073 seconds. Elapsed time is 0.000060 seconds. Mv( rand(1000,1) ); Elapsed time is 0.000209 seconds. Elapsed time is 0.000047 seconds. Mv( rand(10000,1) ); Elapsed time is 0.040719 seconds. Elapsed time is 0.000105 seconds. Mv( rand(10000,1) ); Elapsed time is 0.041286 seconds. Elapsed time is 0.000103 seconds.