Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    Name:  coordinate geo.png
Views: 91
Size:  18.6 KB


    I am stuck on part iv. I don't how to do it. I have checked the mark scheme and it equated the gradient of the tangent and line. Is there a reason for that?
    Offline

    16
    ReputationRep:
    (Original post by danbomb123)
    Name:  coordinate geo.png
Views: 91
Size:  18.6 KB


    I am stuck on part iv. I don't how to do it. I have checked the mark scheme and it equated the gradient of the tangent and line. Is there a reason for that?
    When they have the same gradient the share the X coordinate(p).from that q can also be worked out.
    I presume they used the differential of the curve and set it equal to the gradient of the line, then solved for x then subbed x into the line to get y?
    Posted from TSR Mobile
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by lyricalvibe)
    When they have the same gradient the share the X coordinate(p).from that q can also be worked out.
    I presume they used the differential of the curve and set it equal to the gradient of the line, then solved for x then subbed x into the line to get y?
    Posted from TSR Mobile
    yeah, that's correct. Thanks
    Offline

    16
    ReputationRep:
    I was on a break when I answered your question from a past paper. I come back and then I now have the exact question you just asked
 
 
 
Poll
Should universities take a stronger line on drugs?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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

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