1 / | | 1 | ----------------------- dx | ____________ | / 2 | (x + 1)*\/ x + x + 1 | / 0
1 1 / / | | | 1 | 1 | ----------------------- dx = | ----------------------- dx | ____________ | ____________ | / 2 | / 2 | (x + 1)*\/ x + x + 1 | (1 + x)*\/ 1 + x + x | | / / 0 0
0.549306144334055