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Project: Matlab
Views: 24
Kernel: Octave
function y=fun1(x) y=sin(x).^3; end
x=-3.*pi:0.01:3.*pi; y=fun1(x); plot(x,y) title('y=sin(x).^3 (A. Hryshchenko )') xlabel('x') ylabel('y')
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x=-3.*pi:0.01:3.*pi; b=[1 2 3]; y=fun1(x); subplot(1 2 3); plot(x,y) title('y=sin(b.*x) (A. Hryshchenko )') xlabel('x') ylabel('y')
parse error: syntax error >>> subplot(1 2 3); ^
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function y=fun2(x,b) y=sin(b.*x); end
x=-3.*pi:0.01:3.*pi; y1=fun2(x,1); y2=fun2(x,2); y3=fun2(x,3); plot(x,y1, x,y2, x,y3) title('y=sin(b.*x) (A. Hryshchenko)') xlabel('x') ylabel('y') legend('b=1','b=2','b=3')
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subplot(3,1,1) plot(x,y1) title('y=sin(b.*x) (A. Hryshchenko)') subplot(3,1,2) plot(x,y2) title('y=sin(b.*x) (A. Hryshchenko)') subplot(3,1,3) plot(x,y3) title('y=sin(b.*x) (A. Hryshchenko)')
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function y=fun3(x,b,a) y=a.*sin(b.*x); end
x=-3.*pi:0.01:3.*pi; y1=fun3(x,1,1); y2=fun3(x,1,2); y3=fun3(x,1,10); plot(x,y1, x,y2, x,y3) title('y=a.*sin(b.*x) (A. Hryshchenko)') xlabel('x') ylabel('y') legend('a=1','a=2','a=10')
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subplot(3,1,1) plot(x,y1) ylim([-10 10]) title('y=a.*sin(b.*x) (A. Hryshchenko)') subplot(3,1,2) plot(x,y2) ylim([-10 10]) title('y=a.*sin(b.*x) (A. Hryshchenko)') subplot(3,1,3) plot(x,y3) ylim([-10 10]) title('y=a.*sin(b.*x) (A. Hryshchenko)')
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function y=fun4(x,c,z) y=c.*x.^z; end
x=0:0.01:3; y1=fun4(x,1,0.1); y2=fun4(x,1,0.2); y3=fun4(x,1,0.4); y4=fun4(x,1,0.5); plot(x,y1, x,y2, x,y3, x,y4) title('y=c.*x.^z (A. Hryshchenko)') xlabel('x') ylabel('y') legend('z=0.1','z=0.2','z=0.4','z=0.5')
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subplot(4,1,1) plot(x,y1) title('y=c.*x.^z (A. Hryshchenko)') subplot(4,1,2) plot(x,y2) title('y=c.*x.^z (A. Hryshchenko)') subplot(4,1,3) plot(x,y3) title('y=c.*x.^z (A. Hryshchenko)') subplot(4,1,4) plot(x,y4) title('y=c.*x.^z (A. Hryshchenko)')
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a=[11 12 13;14 15 16;17 18 19]; size(a)
ans = 3 3
a=[11 12 13;14 15 16;17 18 19]; b=zeros(3,3) numel(a)
b = 0 0 0 0 0 0 0 0 0 ans = 9
a=[11 12 13;14 15 16;17 18 19]; a(:)=25
a = 25 25 25 25 25 25 25 25 25
a=[11 12 13;14 15 16;17 18 19]; N=numel(a) for k=1:N a(k)=25; end numel(a)
N = 9 ans = 9
function y=f(x) y=x.*0.1 end
x=11:1:14 y=x.*0.1; plot(x,y,'r*')
x = 11 12 13 14
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x=11:1:14 y=x.*0.1; y2=y; y2(x>12)=5; plot(x,y) hold on plot(x,y2,'g*')
x = 11 12 13 14
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function y=f(x) y=zeros(size(x)); y(x>2)=1; y(x<=2)=2; end
x=0:0.01:4; y=f(x) plot(x,y)
y = Columns 1 through 20: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 21 through 40: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 41 through 60: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 61 through 80: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 81 through 100: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 101 through 120: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 121 through 140: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 141 through 160: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 161 through 180: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 181 through 200: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Columns 201 through 220: 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 221 through 240: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 241 through 260: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 261 through 280: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 281 through 300: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 301 through 320: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 321 through 340: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 341 through 360: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 361 through 380: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Columns 381 through 400: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Column 401: 1
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function y=f(x) y=zeros(size(x)); y(x<20)=1; y(20<=x & x<30)=3; y(30<=x)=2; end
x=10:0.01:40; y=f(x); plot(x,y) ylim([0 4])
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