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I'm not sure if I'm correct...

 

if I have expression log(a)*log(b)=log(c)

 

Can I change it to a*b=c ? Or anything if possible.

 May 16, 2016

Best Answer 

 #1
avatar
+10

No.   Because....

If you have a*b=c   and you take logs of both sides you get

log(a*b)= log c       .                             Now  log(a*b) = log a  + log b,  and not log (a)*log(b)

 May 16, 2016
 #1
avatar
+10
Best Answer

No.   Because....

If you have a*b=c   and you take logs of both sides you get

log(a*b)= log c       .                             Now  log(a*b) = log a  + log b,  and not log (a)*log(b)

Guest May 16, 2016
 #2
avatar+129852 
+5

No, unfortunately, there's not much you can do......it is tempting to want to get rid of the logs  and solve  a * b  = c.......however.....we can quicly see that this will not work.......consider this....  [I'm using 10 as the base]

 

log(100) * log(1000)  =  log (1,000,000)      which is true

 

But

 

100 * 1000  ≠  1,000,000

 

So.....in general, for

 

log(a)*log(b) = log(c)

 

a * b ≠  c

 

 

 

cool cool cool

 May 16, 2016
 #3
avatar+50 
0

yeah thanks guys, that's why I asked. Like it's so tempting to do this, but feels wrong :< . Anyway thanks again.

 May 16, 2016

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