Sunday, April 22, 2012

What is the solution of the equation 7^(3x-2)=17 in terms of logarithms?

7^(3x-2) = 17


First we will
apply the logarithm for both sides.


==> log 7^(3x-2)
= log 17.


Now we will use the logarithm properties to solve
for x.


We know that log a^b = b*log
a.


==> log 7^(3x-2) = (3x-2)*log
7.


Let us substitute into the
equation.


==> (3x-2)*log 7 = log
17.


Now we will divide by log
7.


==> (3x-2) = log 17 / log
7.


Now we will add 2 to both
sides.


==> 3x = (log 17/log 7)  +
2


Now we will divide by
3.


==> x = [(log 17/log 7) + 2 ] /
3

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