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HW2S - result = 0.5000 1.0000 1.0000 16.0000 2.4 2.5(a...

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Fall 2011, Dr. Frank Shih 2.1 (a) Giving anyone of them is correct: [3:4:67] or [3:4:68] or [3:4:69] or [3:4:70] (b) Giving anyone of them is correct: [-32:7:31] or [-32:7:32] or [-32:7:33] or [-32:7:34] or [-32:7:35] or [-32:7:36] or [-32:7:37] (c) 17 12 7 2 -3 (d) Empty matrix: 1-by-0 (e) 4 5 6 7 8 9 2.2 (a) b = 1 1 0 3 1 (b) c = 0 0 0 0 0 0 0 6 (c) d = 1 2 0 0 0 8 (d) size(A) ans = 3 3 (e) size(A) ans = 3 3 2 2.3 (a) >> result = a + b result = 1 4 -1 6 (b) >> result = a * d result = 2 1 -1 4 (c) >> result = a .* d result = 2 0 0 4 (d) >> result = a * c result = 5 2
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Fall 2011, Dr. Frank Shih (e) Illegal: This is element by element array multiplication, and the two arrays have different sizes. (f) >> result = a \ b result = -0.4444 1.1111 -0.1111 0.7778 (g) >> result = a .\ b result = -0.5000 3.0000 0 0.5000 (h) >> result = a .^ b result =
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Unformatted text preview: result = 0.5000 1.0000 1.0000 16.0000 2.4 2.5 (a) clear clc A1 = [2,4,8] B1 = [3,9,27] odds=1:2:(2*length(A1)); evens= 2:2:(2*length(A1)); C1(odds)=A1+B1; C1(evens)=A1-B1 (b) The script file “hw2.m” is Fall 2011, Dr. Frank Shih clear clc A1 = input( 'Enter A1 ' ); B1 = input( 'Enter B1 ' ); odds=1:2:(2*length(A1)); evens= 2:2:(2*length(A1)); C1(odds)=A1+B1; C1(evens)=A1-B1 In command window, type >>hw2 Enter A1 [-2, -4, -8, -10, -12] Enter B1 [3, 9, 27, 21, 23] C1 = 1 -5 5 -13 19 -35 11 -31 11 -35 Bonus clear clc close all x = linspace(-5, 5, 60); y1 = 3*x; y2 = (3*x).^ 2; y3 = (3*x).^ 3; y4 = (3*x).^ 4; plot(x,y1,x,y2,x, y3, x, y4) xlabel( 'x Value' ) ylabel( 'y Value' ) title( 'Powers of x' ) legend( 'y1' , 'y2' , 'y3' , 'y4' ) Fall 2011, Dr. Frank Shih -5-4-3-2-1 1 2 3 4 5-1 1 2 3 4 5 6 x 10 4 x Value y Value Powers of x y1 y2 y3 y4...
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