C++ programming

Write a C++ function to evaluate this mathematical function: f(x) = 0.1x^2 - x In x. Assume that the corresponding function prototype is double f(double x): Then modify the program developed in Section 6.10 so that it searches for roots of this new function instead of searching for roots of polynomials. Test the program by searching for a root in [ 1, 2J for this new function