MYTUTOR SUBJECT ANSWERS

373 views

Using logarithms solve 8^(2x+1) = 24 (to 3dp)

Using the laws of logs you can see that if you log both sides of the equation you get: 

(2x+1)*log(8) = log(24) 

Dividing both sides of the equation by log(8) you get: 

2x+1 = log(24)/log(8)

Then it is a simple case of solving for x: 

x = 0.5*(((log(24)/log(8))-1)

x = 0.264

Graham R. A Level Maths tutor, GCSE Maths tutor, A Level Physics tuto...

6 months ago

Answered by Graham, an A Level Maths tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

257 SUBJECT SPECIALISTS

£20 /hr

James S.

Degree: MPhys (Masters) - Edinburgh University

Subjects offered: Maths, Physics+ 2 more

Maths
Physics
Chemistry
Biology

“About me: I am a third-year physics student at the University of Edinburgh. I have always been passionate about the sciences; including biology and chemistry in conjunction with physics. I love having the opportunity to help and meet ...”

MyTutor guarantee

£20 /hr

Seb G.

Degree: Mathematics (Masters) - Bath University

Subjects offered: Maths

Maths

“Me: I'm a second year maths student at the University of Bath. I fell in love with maths after a rocky start with the subject, so believe that I can help people regardless of whether they like maths or not.  I've been tutoring maths l...”

MyTutor guarantee

£22 /hr

Will W.

Degree: Mathematics (Bachelors) - Durham University

Subjects offered: Maths, Physics+ 2 more

Maths
Physics
Further Mathematics
.STEP.

“About Me: I am a Maths and Physics student at Durham University, who has always enjoyed understanding complex concepts in these subjects. I also have a passion for sharing this enjoyment. At my previous school, I ran a Maths Club. Thi...”

About the author

Graham R.

Currently unavailable: for new students

Degree: Geophysics with Geology (Bachelors) - Durham University

Subjects offered: Maths, Physics+ 1 more

Maths
Physics
Geography

“About Me I am a 3rd year Geophysics and Geology student at Durham University. Ever since I was small Maths seemed to click with me and I always found it easy to explain. These skills came in use when I was asked to be an academic ment...”

You may also like...

Posts by Graham

Using logarithms solve 8^(2x+1) = 24 (to 3dp)

y = x*(x-2)^-1/2. Prove dy\dx = (x-4)/2*(x-2)^3/2

Other A Level Maths questions

If y = (1+3x)^2, what is dy/dx?

Differentiate ((x^2)+1)^2

How can I improve my score?

Find the integral of sin^2(X)

View A Level Maths tutors

Cookies:

We use cookies to improve our service. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok