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Jul 4 2013 07:05am
Stuck on this question which is in chapter "changing of base".

log(base2)x + log(base4)x = 2

I've tried changing the second term to base 2 and solving a quadratic but didn't work out lol.

Can anyone point me in the right direction?
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Member
Posts: 4,657
Joined: Jun 18 2010
Gold: 1,532.01
Jul 4 2013 08:05am
Quote (carteblanche @ Jul 4 2013 02:28pm)


Unhelpful, I know the rules and formulae, I need to know the best way to tackle problems like this.
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Jul 4 2013 09:25am
Quote (GetOnYourKnees @ Jul 4 2013 07:05am)
Stuck on this question which is in chapter "changing of base".

log(base2)x + log(base4)x = 2

I've tried changing the second term to base 2 and solving a quadratic but didn't work out lol.

Can anyone point me in the right direction?


After you change the second term to base 2 combine the terms it's addition so multiply the x and number you got when you changed it to a base 2 log and then try to solve with only one term on each side.

Forgive me if I am wrong it has been a long time since I did logarithms. And if someone knows better please correct me.
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Jul 4 2013 09:31am
Quote (MANDMTOW @ Jul 4 2013 04:25pm)
After you change the second term to base 2 combine the terms it's addition so multiply the x and number you got when you changed it to a base 2 log and then try to solve with only one term on each side.

Forgive me if I am wrong it has been a long time since I did logarithms. And if someone knows better please correct me.


Shit, you're right.

Can't believe I failed to pick that up after 2 hours of doing a chapter on the log multiplication and division rules :lol:

Thanks!
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Jul 4 2013 09:31pm
Quote (GetOnYourKnees @ Jul 4 2013 09:31am)
Shit, you're right.

Can't believe I failed to pick that up after 2 hours of doing a chapter on the log multiplication and division rules  :lol:

Thanks!


No problem man glad I could help.
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