This should be a rather simple question, and I think I am just not understanding the error.
I have a function say f(x,y)= x*y^3*normal(y,1,2) where normal() is the normal pdf equation (x,mean,standard deviation).
So I want to integrate across the pdf and then plot x. What I thought I would do was:
g = f.integral(y,0,Infinity)
plot(g,-10,10)
But that give the error: ValueError: free variable: x
What am I missing?
