1 ---------------------------- ______________ / 1 2 / 1 - -------- *(x + 3) / 2 \/ (x + 3)
/ 1 \ -|2 + -----------------------| | / 1 \ 2| | |1 - --------|*(3 + x) | | | 2| | \ \ (3 + x) / / ------------------------------- ______________ / 1 3 / 1 - -------- *(3 + x) / 2 \/ (3 + x)
3 7 6 + ------------------------ + ----------------------- 2 / 1 \ 2 / 1 \ 4 |1 - --------|*(3 + x) |1 - --------| *(3 + x) | 2| | 2| \ (3 + x) / \ (3 + x) / ------------------------------------------------------ ______________ / 1 4 / 1 - -------- *(3 + x) / 2 \/ (3 + x)