Chapter 4, Problem 4.16P

To determine

To prove:

The bundle GMR is given by $D_{SL}={\left[N_b{D}_S{A}^{\left(N_b-1\right)}\right]}^{\frac{1}{N_b}}$

and

  $\begin{array}{l}{\text{D}}_{SL}=\sqrt{d{D}_s}\text{for}{N}_b\text{ = 2}\\ {\text{D}}_{SL}=\sqrt[3]{d^3{D}_s}\text{ for}{N}_b\text{ = 3}\\ {\text{D}}_{SL}=\sqrt[4]{D_s{d}^3}\sqrt{\frac{4}{2\sqrt{2}}}\text{ for }{N}_b\text{ = 4}\end{array}$