How to solve

P$4.$ For the gear train shown below, please find

$($a$).$ Its graph representation $($includes locate axes labels$).$

$($b$).$ For link $1$ as the input, link $3$ as the output, find $\frac{{}_3}{{}_1}$ by fundamental circuit method.

$($c$).$ Repeat $($b$),$ by equation method.

$($d$).$ Repeat $($b$),$ by tabular method.

Fig. $4$ Planetary gear train for Problem $4$