Question

$$63 { a }^{ 4 } { b }^{ 2 } |42 { a }^{ 3 } { b }^{ 6 } c$$

Evaluate

$2646|c|\left(|a|\right)^{3}a^{4}b^{8}$

Differentiate w.r.t. a

$18522|a||c|a^{5}b^{8}$