Differentiate the following function.

http://i37.tinypic.com/nb6tt0.gif

g '(u) =

[LEFT]Attempt

I don't know how I got it wrong this time :(

I did

= 3u^(1/2)+2u^(1/2)

= 1.5u^(-1/2)+u(-1/2)

= (3/2)u^(-1/2)+u^(-1/2)

= 1/(3/2)u^(1/2)+1/(u^(1/2)

= 1/(sqrt(3/2)u) + 1/(sqrt(u))

I just learnt that x^-1/2 = 1/x^1/2

I don't understand what I did wrong this time :( Please help me out! thank you so much! (Shake)(Worried)