You are Here: Home >< Maths

# Quick differentiation help please.... Watch

1. Differentiate
I did this:
u= and y=6sinu

=6cosu =

The answer is meant to be 3cossqrtx / sqrtx
How do you get that? If you times it together it doesnt come to that ? :|

P.S Merry Christmas everyone (and for those not celebrating) Merry Saturday!
2. (Original post by Nkhan)
Differentiate
I did this:
u= and y=6sinu

=6cosu =

The answer is meant to be 3cossqrtx / sqrtx
How do you get that? If you times it together it doesnt come to that ? :|

P.S Merry Christmas everyone (and for those not celebrating) Merry Saturday!

That's the same as

Because multiplication is multiplication - it doesn't matter if you do 6x8 or 8x6. So it doesn't matter if you do (1/2)*(x^-1/2)*(6) or (x^-1/2)*(6)*(1/2) or (1/2)*(6)*(x^-1/2).

You should probably be able to figure out what is as a fraction now if you already didn't know
3. (Original post by Chelle-belle)

That's the same as

Because multiplication is multiplication - it doesn't matter if you do 6x8 or 8x6. So it doesn't matter if you do (1/2)*(x^-1/2)*(6) or (x^-1/2)*(6)*(1/2) or (1/2)*(6)*(x^-1/2).

You should probably be able to figure out what is as a fraction now if you already didn't know
Thankyou I get it now

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: December 25, 2010
Today on TSR

### Degrees to get rich!

... and the ones that won't

### Cambridge interviews pour in...

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.