Question

Please help me finish the following definite integral (click to see).

Answer 1

\[\int\limits_{2}^{4}\sec ^{-1}(\sqrt{x})dx\]

Answer 2

this is where I am now...
\[xsec ^{-1}(\sqrt{x})]_{2}^{4}-\frac{ x ^{2} }{ 2 }]_{2}^{4}\]