I was just wondering if it is possible to find b in this equation? f(x,y)=result. where y=f(a,b). so the I guess f(x,f(a,b))=result. I know the actual value of x,a and result and it is possible to find b in the equation. I also know the function of f(). Please ask me if this is the question is not clear and this is not a homework question.