I need help using C++. Please provide output screen thanks

Given: tanh(x) = 1 - 2 e^-2x + 2 e^x^-4x - 2 e^-6x + 2 e^-8x - 2 e^-10x + .... cos(x)= 1 -x^2/(2!) + x^4/(4!) - x^6/(6!) + x^8/(8!) + .... where 0 lessthanorequalto x lessthanorequalto 2 pi Write two functions: tanh(ax) where a and x are passed to the function and cos(ax) where a and x are passed to the function. The functions must give answers that are accurate at least to six significant digits. Write a program to test the functions by computing F = 5 tanh(ax) + 4 cos(ax) where 0 lessthanorequalto x