You are Here: Home >< A-levels

# Simple differentiation

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
1. Hi guys I'm stuck own differentiation of x=cos(y/2) +1
would help if someone explained each step I don't understand why it is
-1/2sin(y/2)
2. Use the chain rule.

let u = y/2 and find
3. (Original post by NotNotBatman)
Use the chain rule.

let u = y/2 and find
Thanks but what would u' would be
4. (Original post by Wisteria_xo)
Hi guys I'm stuck own differentiation of x=cos(y/2) +1
would help if someone explained each step I don't understand why it is
-1/2sin(y/2)

omg i'm procrastinating so hard that i'm answering maths questions wtf is my life
5. (Original post by Wisteria_xo)
Thanks but what would u' would be
Is it Easier to see if written like this. ?
6. (Original post by Rhaenys10)

omg i'm procrastinating so hard that i'm answering maths questions wtf is my life
lool AH MAKES SO MUCH SENSE thank you !
7. (Original post by NotNotBatman)
Is it Easier to see if written like this. ?
yes yes yes helped a lot thank you!!! Blind moment !
8. (Original post by Wisteria_xo)
lool AH MAKES SO MUCH SENSE thank you !
you're welcome

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: September 18, 2016
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:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll

## All the essentials

### Student life: what to expect

What it's really like going to uni

### Essay expert

Learn to write like a pro with our ultimate essay guide.

### Create a study plan

Get your head around what you need to do and when with the study planner tool.

### Resources by subject

Everything from mind maps to class notes.

### Study tips from A* students

Students who got top grades in their A-levels share their secrets