Turn on thread page Beta

how do I treat two 'e^x' multiplied by each other? watch

    • Thread Starter
    Offline

    2
    ReputationRep:
    the 'e' stands for exponential

    anyway if 'e^x' is multiplied by another 'e^x', then should I treat it as:

    e^x+x or e^x*x



    by the way, can someone also help me out with this question please:

    given that 2sin(x + 30) = cos(x + 60), find the exact values of tanx
    Offline

    0
    ReputationRep:
    (e^x)(e^x) = (e^x)^2 = e^2x
    Offline

    14
    ReputationRep:
    (Original post by W.H.T)
    by the way, can someone also help me out with this question please:

    given that 2sin(x + 30) = cos(x + 60), find the exact values of tanx
    I just did that question now, but I don't know if I have the correct answers. I subbed my answers in and it worked so...

    You expand both sides. Turn whatever you can into actual numbers e.g. turn 2cos(30) into *root3*. Cancel it all down, divide by cosx and you get tanx = -*root*3/9

    What are the answers?
    Offline

    12
    ReputationRep:
    e^2x
    • PS Helper
    Offline

    0
    ReputationRep:
    PS Helper
    tanx=-root3/9
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: January 19, 2010

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?
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.