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How do I find all the positive roots of (e^(-.2x ))(cos(2x))-.15x^2+1
I only know how to do this with polynomials.
12 years 前 | 1 个回答 | 0
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How do I find all the positive roots of (e^(-.2x ))(cos(2x))-.15x^2+1
So far, I've done fun=@(x) exp^(-.2*x)*cos(2*x)-.15*x^(2)+1; x0=[-6: .1 :6]; z=fzero(fun,x0); Nothing happens.
12 years 前 | 1 个回答 | 0
