# Inconsistency in derivative problems

• March 29th 2009, 11:49 AM
janedoe
Inconsistency in derivative problems
http://i41.tinypic.com/x21hjo.jpg

^^It's all in there...it has to do with parentheses placement.

Thanks!(Rofl)
• March 29th 2009, 11:53 AM
Jester
Quote:

Originally Posted by janedoe
http://i41.tinypic.com/x21hjo.jpg

^^It's all in there...it has to do with parentheses placement.

Thanks!(Rofl)

I think it depends on the placement of the power. The usual convention is

$\sin^2x = \left(\sin x\right)^2$ and $\sin x^2 = \sin \left( x^2\right)$
• March 29th 2009, 12:01 PM
janedoe
ahh thank you! that's all i needed to know :]