Really need help writing this C++ code. I will rate quick... Thank you

Newton-Raphson method: Modify a C code to find the roots of equation with initial guess of x_0 = 2: f(lambda) = lambda^3- 3 lambda^2 + 2.3146 lambda - 0.504188 = 0 f'(lambda) = df/d lambda = 3 lambda^2 - 6 lambda + 2.3146 Any comments between this method and the direct research method