_________________ _______ / 3 2 \/ 4 - x - \/ x - 5*x + 4*x f(x) = --------------------------------------- 2 / / 3 2 \\ _______ |log\x - 5*x + 4*x + 1/| \/ 4 - x + |------------------------| \ log(5*x + 1) /
f = (sqrt(4 - x) - sqrt(4*x + x^3 - 5*x^2))/((log(4*x + x^3 - 5*x^2 + 1)/log(5*x + 1))^2 + sqrt(4 - x))