help w/ logs, expos: log2 of 2x+log2 of x+5, 7^2x-4=14, etc

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.
clintator
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Joined: Tue Mar 30, 2010 2:47 pm
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help w/ logs, expos: log2 of 2x+log2 of x+5, 7^2x-4=14, etc

Postby clintator » Tue Mar 30, 2010 3:19 pm

Im completely lost as how to do some of these

log2 of 2x+log2 of x+5

7^2x-4=14

3e^x+7=9

log3 of x+log3^(x-6)=3

log4 (5x-2)=3

Expanding confuses me too

log3 of (7x^2/y)

One of condensing too

log2 of 7 +log2 of x - 3log2 of y

Stranger_1973
Posts: 21
Joined: Sun Feb 22, 2009 9:56 pm

Re: help w/ logs, expos: log2 of 2x+log2 of x+5, 7^2x-4=14,

Postby Stranger_1973 » Tue Mar 30, 2010 8:43 pm

clintator wrote:log2 of 2x+log2 of x+5

what are the instructions for this?

clintator wrote:7^2x-4=14

is the 4 in the power, or not? (for solving go here)

clintator wrote:3e^x+7=9

is the 7 in the power, or not?

clintator wrote:log3 of x+log3^(x-6)=3

log4 (5x-2)=3

they have a lesson here for solving log eqns

clintator wrote:Expanding confuses me too

One of condensing too

use the log rules


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