Tau(q) exercise solutions

For these values: r = 0.5, p₁ = 0.20, p₂ = 0.25, p₃ = 0.30 and p₄ = 0.35, here are some points on the tau(q) curve.

q tau(q)

-2 5.91

-1 3.93

0 2

1 0

2 -1.67

5 -6.80