Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    Ok i got an A at A level maths but upon starting Physics undergrad they've confused the hell out of me. WHat would you answer to this....

    Find the solution to dx/dt = 2

    Such that x = 5 at t = 1

    So im assuming im looking for a value in which case i need to work out the constant after I integrate.... Ive forgotten how to do this, do i use 5 and 1 or do i use x0 = x, t0 = t

    Someone answer it just so i get whats going on please! x x x
    Offline

    1
    ReputationRep:
    dx/dt = 2
    Integrate both sides wrt t
    INT dx/dt dt = 2t + c
    INT dx = 2t + c (using the chain rule)
    x = 2t + c (note you only need one constant)

    Now substitute x=5 and t=1 to find c.
 
 
 
Poll
Black Friday: Yay or Nay?
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

Equations

Best calculators for A level Maths

Tips on which model to get

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.