Math Is Fun Forum

diamond777

Member

Registered: 2011-07-19

Posts: 20

Help!

seventy years young student of maths is fun
In need of lots of help!
lets start with:
algebra - working with exponents and logarithms-
question five
solve (for x)
2log3(x)=5
answer D x = 9square root(3)
i presume the 2 means that x is squared in the question?
please explain what 9square root of (3) is and how it is the square root of 243?
thank you ....

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Help!

Hi diamond777;

seventy years young student of maths is fun
In need of lots of help!

Divide both sides by 2

3^x both sides.

Welcome to the forum, young man.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 46,182

Re: Help!

Hi diamond777,

Welcome to the forum!

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It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.