How can I extract coefficients in terms of variables out of an expression in Matlab?

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Mirroyal Ismayilov
Mirroyal Ismayilov 2018-7-25
评论： Mirroyal Ismayilov 2018-7-25
I need to return coefficients of variable from an expression or polynomial. Actually, in Maxima I was using ratcoef(exp,var) . I need exactly same work in MATLAB.

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Walter Roberson
Walter Roberson 2018-7-25
If your expression is symbolic, see sym2poly() and see coeffs()
If your expression is not a polynomial then getting the coefficients can be more difficult. For example neither sym2poly() nor coeffs() can extract the pi/7 of sin(pi/7*x)

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