# P2 Log QuestionsWatch

This discussion is closed.
Thread starter 14 years ago
#1
Solve the equations

a) log[2]x + 4log[x]2 = 5

b) log[3](2-3x) = log[9](6x^2 - 19x + 2)

Calculate the values of z for which

log[3]z = 4log[z]3

Thanks
0
14 years ago
#2
For a) log[2]x + 4log[x]2 = 5 you should note that log[2]x = 1/log[x]2.
Now set u = log[2]x and you have a quadratic in u which you can solve.

For b) log[3](2-3x) = log[9](6x^2 - 19x + 2), this one was done a couple of days ago. See this thread - Post #4.

For the final question, it's the same method as for a).
0
X
new posts
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• Sheffield Hallam University
Thu, 13 Dec '18
• University of Buckingham
Thu, 13 Dec '18
• University of Lincoln
Mini Open Day at the Brayford Campus Undergraduate
Wed, 19 Dec '18

### Poll

Join the discussion

#### Do you like exams?

Yes (205)
18.69%
No (665)
60.62%
Not really bothered about them (227)
20.69%