Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    12
    ReputationRep:
    4 / e^2x

    ???

    also is this right ? 1 / 5x integrated = 5lnx

    thanks
    Offline

    17
    ReputationRep:
    I assume you know how to integrate functions of the form Ce^{kx} where C,k are any numbers. So can you write the given expression in that form?

    No, you know that integrating \dfrac{1}{x} will give you \log x, and what you're trying to integrate is \dfrac{1}{5} \left(\dfrac{1}{x}\right). So the correct answer is...?
    Offline

    9
    ReputationRep:
    I’d assume it was (4e^-2x)/-2x...that is (-2e^-2x)/x
    ....I’d also have thought the integral of 1/5x would be 1/5 *lnx
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?
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.