# Easy - Restating Exponential Equations

• Dec 9th 2007, 04:07 PM
Macleef
Easy - Restating Exponential Equations
Restate each in exponential form:

1) $log_aa^3$

My work:

$a = a^3$

--

2) $log_bb^ \frac {3}{2}$

My work:

$b = b^ \frac {3}{2}$

--

3) $log_kk^{\sqrt3}$

My work:

$k = k^{\sqrt3}$

--

4) $log_22^{x}$

My work:

$2 = 2^{x}$

Can someone check my work, and if it's wrong can you please tell me how to correct it?
• Dec 9th 2007, 04:17 PM
Krizalid
This is just the application of the property $\log_aa=1$ & $\log a^b=b\cdot\log a.$
• Dec 9th 2007, 04:21 PM
Macleef
Quote:

Originally Posted by Krizalid
This is just the application of the property $\log_aa=1$ & $\log a^b=b\cdot\log a.$

okay....can you check my answers then...?
• Dec 9th 2007, 04:27 PM
Jhevon
Quote:

Originally Posted by Macleef
okay....can you check my answers then...?

that was Krizalid's way of telling you you are wrong...on all of them. use his rules and try again

another rule that may come in handy, but that can be derived from the rules Krizalid gave is: $\log_aa^x = x$

you seem to be confused as to how to interpret logarithms. see post #4 here
• Dec 9th 2007, 04:29 PM
Macleef
Can you give me examples to demonstrate the rules?
• Dec 9th 2007, 04:42 PM
Macleef
Quote:

Originally Posted by Jhevon
that was Krizalid's way of telling you you are wrong...on all of them. use his rules and try again

another rule that may come in handy, but that can be derived from the rules Krizalid gave is: $\log_aa^x = x$

you seem to be confused as to how to interpret logarithms. see post #4 here

I don't know how to simplify non numeric values with numeric exponents and vice versa...or do I just leave it the way it is?

ex.

$log_aa^3$

$a^{3} = a^{3} ???$
• Dec 9th 2007, 04:43 PM
Jhevon
Quote:

Originally Posted by Macleef
I don't know how to simplify non numeric values with numeric exponents and vice versa...or do I just leave it the way it is?

ex.

$log_aa^3$

$a^{3} = a^{3} ???$

$\log_aa^3 = 3 \log_a a = 3(1) = 3$ .........by the rules Krizalid gave you