Im not sure how to go onto the third derivative.

would I use (2x-3) as U or 48(2x-3) as U?

Use the (2x-3) for u. Constants really do not figure in the process. Just do not forget to hold on to them for the final answer.

]]>nevermind!

I got it!

I HAVE GOT THIS MAN!!!!

]]>it gave the same answer with the power of 2, 48(2x-3)^2

I looked at the steps on this calculator and didn't understand them.

Im not sure how to go onto the third derivative.

would I use (2x-3) as U or 48(2x-3) as U?

for the second I got

48(2x-3)

That is incorrect.

]]>(2x-3)^4

for the first one I got

8(2x-3)^3

for the second I got

48(2x-3)

the way I was shown is this,

2x-3=U du/dx = 2

y= u^4 dy/du = 4u^3

dy/du * du/dx = 4u^3 * 2 = 8u^3

since u = 2x-3

8(2x-3)^3

then I got lost

here I got stuck and not sure where I went wrong, any help

thanks

simon