Tuesday, May 7, 2013

Logarithmic equations


solve: 3log[3](-5x)=3

Your Answer:
3log3%28-5x%29=3

let's divide it by 3, then use inverse operations:

%283log3%28-5x%29%29%2F3=3%2F3


log3%28-5x%29=1

3%5E%28log3%28-5x%29%29=3%5E1

-5x=3

so x=-3/5

:)
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