/ 2 \ x*log\4*x + 1/ - 2*x + atan(2*x)
x*log(4*x^2 + 1) - 2*x + atan(2*x)
2 2 8*x / 2 \ -2 + -------- + -------- + log\4*x + 1/ 2 2 1 + 4*x 4*x + 1
/ 2 \ | 2 8*x | 8*x*|3 - -------- - --------| | 2 2| \ 1 + 4*x 1 + 4*x / ----------------------------- 2 1 + 4*x
/ 2 2 4 \ | 2 48*x 32*x 128*x | 8*|3 - -------- - -------- + ----------- + -----------| | 2 2 2 2| | 1 + 4*x 1 + 4*x / 2\ / 2\ | \ \1 + 4*x / \1 + 4*x / / ------------------------------------------------------- 2 1 + 4*x