How can I plot the function y = e^(-2x^2) * cos(4pi*x - 1.5)?

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emma
emma 2021-2-11
评论： emma 2021-2-11
How do I plot the function of y = e^(-2x^2) * cos(4pi*x - 1.5)? This is what I have so far but I can't seem to figure out what to do for the x coordinate. Is my y correct? Please help!
x=?
y=exp(-2.*x.^2) .* cos(4.*pi.*x - 1.5)
plot(x,y)

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James Tursa
James Tursa 2021-2-11
Pick a range for x. E.g.,
x = 0:0.01:2;
y = exp(-2.*x.^2) .* cos(4.*pi.*x - 1.5);
plot(x,y)

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