my answer =

incorrect apparently...

the answer they want =

but I don't understand what i'm doing wrong?

any help is much appreciated,

Thankyou

vest4R
May 13, 2017

#1**+3 **

∛ t - 1 / ∛t we can write this as

t^(1/3) - t^(-1/3) differentiating we have

(1/3) t^(-2/3) + (1/3)t^(-4/3) factor out (1/3)

(1/3) [ t^(-2/3) + t^(-4/3) ] =

.333333 [ t^(-.666666) + t^(-1.33333) ]

However.......we can actually express this more compactly as

(1/3)t^(-4/3) [ t^(2/3) + 1 ]

CPhill
May 13, 2017