Hello all, I have this equation: y = x^z * const (where all variables are floats) I need to implement it in C. The program will input for me the value of y and x and the Const. I need to extract the value of z. ln z= ln x^z + lnm const ln y - ln Const = z ln x z = ln y - ln Const / ln x now that i have the final equation, what is the ln function in C? How to call ln from C? Thank you. -- Ibrahim Haddad