# Math Help - differentiation again

1. ## differentiation again

could any1 differentiate

3tanx²

ive come up with

6sec²x²

but believe either this is wrong or there is more to it

thanks

2. $
\frac{d}
{{dx}}3\tan x^2 = \frac{{6x}}
{{\cos ^2 \left( {x^2 } \right)}}$

3. thats not the answer im looking for

tanx differentiated = sec²x

4. Originally Posted by djmccabie
thats not the answer im looking for

tanx differentiated = sec²x
$\sec(x)=\frac{1}{\cos(x)}$

:/

5. i understand that, but i think my teacher is expecting to write it as sec... rather than 1/...