Question

Solve 2 log x = log 64

Answer 1

Using \[\log(x^r)=r \log(x)\]
I rewrote the equation
\[\log (x^2)=\log (64)\]
Set insides equal
By the way make sure you don't keep the negative answer if you get one :)

Answer 2

so it the answer 64?

Answer 3

Nope

Answer 4

\[x^2=64 \text{ when x=?}\]

Answer 5

8 !!!

Answer 6

2logx = log64
logx2 = log64
elogx2=elog64 ##taking exponential both sides##
x2=64
x=8

Answer 7

yes sofia x=8 is right! :)

Answer 8

can you help me with this one myininaya, Solve log4 x – 1 = 2

Answer 9

\[\log_4(x-1)=2 ?\]

Answer 10

or\[\log_4(x)-1=2?\]

Answer 11

or neither?

Answer 12

ayyy i don't know this onee!! :S

Answer 13

\[\log(4x-1)=2 \text{ or } \log(4x)-1=2\]

Answer 14

I'm just trying to figure out the equation

Answer 15

Like is it any of the ones I mentioned?

Answer 16

\[\log_4(x)-1=2\]
If it is this one which I sorta think is the right interpretation of what you wrote
The first step is to add 1 on both sides

Answer 17

\[\log_4(x)=3\]

Answer 18

Now rewrite as an exponential equation! :)
\[x=4^3\]

Answer 19

Or I mean an exponential form

Answer 20

in*

Answer 21

Any questions?