Searching for an expression inside a bigger expression
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I'm writing a function for Chebyshev Quadrature. The only thing I don't know is how to do the following:
there are 2 different types of Chebyshev quadrature depending on whether (1-x)^(1/2) is in the numerator or in the denominator. Let's say my input is following function in symbols:
f = ((1-x^2)/(1+x^2))*sqrt(1-x^2);
How can I write a function which detects whether sqrt(-x^2) is in the numerator or in the denominator?
Thanks in advance
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Walter Roberson
2013-4-28
Symbolic toolbox, or in a string ?
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