Past exam of the mathematics course of the University of Cambridge / 2021 / ii / Paper 4 / 7E / b / i / Solution

Set $z\prime =(1-z)/2$, sending $1,-1,\infty$ to $0,1,\infty$. Then rescale the dependent variable byThis shifts the exponent pairs to $(0,m)$ at zero and $(0,-m)$ at one, while leaving the exponents at infinity unchanged.

Solved by gpt-5.6-sol high.