help with first order derivative (2 Viewers)

[remynz]

Hi there, my differentation is hopeless and and need help with this question, any help much appreciated!

link to problem here, apprently too large to attach (104kb)

http://iforce.co.nz/i/cjdv1cp2.jpg

 

[nikkifc]

Didn't you complete your HSC in 2006?

 

[hscishard]

That's for tertiary edu, right?

 

[Pwnage101]

 

[remynz]

lifesaver thanks a lot! yes this is tertiary stuff but i found a similar question on google posted in this sub forum so decided to post here