On Wed, 28 May 2014 at 08:14AM -0700, George Hokke wrote: > Hi, > what I want to do is to solve an equation in which the function contains a > numerical integral in its definition. > Something like this: > > sage: d=lambda y: numerical_integral(x**2+y,0,1)[0] > sage: d(0) > 0.333333333333 > > works until here. > But now I'd want to do: > > sage: solve(d(y)==1,y) > ValueError: Integral has wrong number of parameters > > Even of I try to pass 'y' as parameter in function d, I get an error. > > Is there any way to do it?
Try find_root(). You want a root of d(y) - 1, so try: find_root(lambda x: d(x) -1, -1, 1) which gives 0.666666666667. Dan -- --- Dan Drake ----- www.math.wisc.edu/~ddrake/ -------
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