You are Here: Home >< Maths

C4 Parametric cartesian equation help needed! Watch

1. First one I'm stuck on...

1) x = 4t + 3 , y= 16t(t+1)

Find a cartesian equation

for my answer I got (x - 3)(x - 2) actual answer is (x - 3)(x + 1)

2) x= t + 1/t^3 , y= t^3 + 1/t^3

answer is x^3= y + 3x

Find a cartesian equation.
2. (Original post by AndyOC)
First one I'm stuck on...

1) x = 4t + 3 , y= 16t(t+1)

Find a cartesian equation

for my answer I got (x - 3)(x - 2) actual answer is (x - 3)(x + 1)

2) x= t + 1/t^3 , y= t^3 + 1/t^3

answer is x^3= y + 3x

Find a cartesian equation.
t=(1/4)(x-3)

Sub that in to the y equation
3. (Original post by Shumaya)
t=(1/4)(x-3)

Sub that in to the y equation
yeah i see what I've done now just an algebra mistake, thank you! could you help with the second one please?
4. (Original post by AndyOC)
yeah i see what I've done now just an algebra mistake, thank you! could you help with the second one please?
I'm working on it
5. (Original post by Shumaya)
I'm working on it
Any luck with that question?
6. (Original post by AndyOC)
Any luck with that question?
Nope haha. Just hoping that the parametric equations in the exam are nicer!
7. If you can't do it tonight I'll do it tomorrow morning for you :P
8. (Original post by Shumaya)
Nope haha. Just hoping that the parametric equations in the exam are nicer!
Yeah hope so!
9. (Original post by nobodycarescarla)
If you can't do it tonight I'll do it tomorrow morning for you :P
If you could that would be great
10. (Original post by AndyOC)
If you could that would be great
Hey can you double check for me
2) x= t + 1/t^3 , y= t^3 + 1/t^3 that this is the right question? I cant understand how they got the answer, it doesnt seem right
11. (Original post by nobodycarescarla)
Hey can you double check for me
2) x= t + 1/t^3 , y= t^3 + 1/t^3 that this is the right question? I cant understand how they got the answer, it doesnt seem right
12. (Original post by nobodycarescarla)
Hey can you double check for me
2) x= t + 1/t^3 , y= t^3 + 1/t^3 that this is the right question? I cant understand how they got the answer, it doesnt seem right
Attached Images

13. Attachment 547883547885

Attached Images

14. (Original post by AndyOC)
Ah thankyou! I mis understood what you ment :')
15. (Original post by nobodycarescarla)
Ah thankyou! I mis understood what you ment :'
Brilliant thank you!

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: June 11, 2016
Today on TSR

Does race play a role in Oxbridge admissions?

Or does it play no part?

The worst opinion about food you'll ever hear

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

Chat with other maths applicants

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.