- Given that
$$a = \frac { 1 } { 64 } x ^ { 2 } \quad b = \frac { 16 } { \sqrt { x } }$$
express each of the following in the form \(k x ^ { n }\) where \(k\) and \(n\) are simplified constants.
- \(a ^ { \frac { 1 } { 2 } }\)
- \(\frac { 16 } { b ^ { 3 } }\)
- \(\left( \frac { a b } { 2 } \right) ^ { - \frac { 4 } { 3 } }\)