You are Here: Home >< A-levels

# Core 1, differentiation maths help!

Announcements Posted on
Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. 1) Y = x^4 + x^1/3 + 3, find dy/dx

2) Y = 8x^5 - 4x^3 + x - 3 - x^-2, find dy/dx
2. What are you having trouble with specifically? If you have been taught how to differentiate with the power rule I can't see how these are causing you any specific trouble.
3. Best advice is to watch a video or use a maths book to learn how to differentiate. Your examples are the basics of differentiation, once you know how to differentiate then they should be fairly straightforward.
4. (Original post by georgiefulcher)
1) Y = x^4 + x^1/3 + 3, find dy/dx

2) Y = 8x^5 - 4x^3 + x - 3 - x^-2, find dy/dx
Post what you have got so far then we can see what you don't understand.
5. So these are all fairly simple if you use the rule: if y=kx^n then dy/dx=knx^(n-1). of course not forgeting that the numbers have no power of x so they are zero when differentiated, and remember to just differentiate each term individually

so
1- dy/d x= 4x^3 + 1/3x^(-2/3)

2- dy/dx = 40x^4 - 12x^2 + 1 + 2x^-3

## 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: October 4, 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

### Who is getting a uni offer this half term?

Find out which unis are hot off the mark here

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