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error while trying to plot four sinusoids

1 次查看(过去 30 天)
Benjamin
Benjamin 2011-10-26
关闭: MATLAB Answer Bot 2021-8-20
script code
t= -5:0.1:5;
x1(t)= 5*cos(2*pi*(15)*t+0.5*pi);
x2(t)= 5*cos(2*pi*(15)*t+0.25*pi);
x3(t)= 5*cos(2*pi*(15)*t+0.4*pi);
x4(t)= 5*cos(2*pi*(15)*t+0.9*pi);
plot (t, x1(t), x2(t),x3(t),x4(t))
title ('Plot Of Four Sinusoids')
error
??? Subscript indices must either be real positive integers or logicals.
Error in ==> PlotOfFourSinusoids at 2 x1(t)= 5*cos(2*pi*(15)*t+0.5*pi);

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