Logarithms Watch

natashabedford
Badges: 2
Rep:
?
#1
Report Thread starter 7 years ago
#1
I have a logarithm like this; ln(2+4x^2)...however, the mark scheme gives it in the form ln(2) + 2x^2...how?

I see that ln(2+4x^2) = ln(2(1+2x^2)) = ln 2 + ln(1+2x^2)

but how does the ln(1+2x^2) become 2x^2 on its own?/

any ideas?
0
reply
olipal
Badges: 1
Rep:
?
#2
Report 7 years ago
#2
It doesn't - how did you arrive at that answer?
0
reply
natashabedford
Badges: 2
Rep:
?
#3
Report Thread starter 7 years ago
#3
The mark scheme - it must be a misprint. thanks for confirming my worries
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
My Feed

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.

Personalise

University open days

  • Cranfield University
    Cranfield Forensic MSc Programme Open Day Postgraduate
    Thu, 25 Apr '19
  • University of the Arts London
    Open day: MA Footwear and MA Fashion Artefact Postgraduate
    Thu, 25 Apr '19
  • Cardiff Metropolitan University
    Undergraduate Open Day - Llandaff Campus Undergraduate
    Sat, 27 Apr '19

Have you registered to vote?

Yes! (139)
38.08%
No - but I will (21)
5.75%
No - I don't want to (26)
7.12%
No - I can't vote (<18, not in UK, etc) (179)
49.04%

Watched Threads

View All