SOLUTION: for each pair of equations, solve one of them by taking logs of both sides. Solve the other by expressing both sides as a power of the same number.
A. 9^x = 4
B. 9^x = 3/3^x
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-> SOLUTION: for each pair of equations, solve one of them by taking logs of both sides. Solve the other by expressing both sides as a power of the same number.
A. 9^x = 4
B. 9^x = 3/3^x
Log On
Question 196782: for each pair of equations, solve one of them by taking logs of both sides. Solve the other by expressing both sides as a power of the same number.
A. 9^x = 4
B. 9^x = 3/3^x Answer by Edwin McCravy(20063) (Show Source):
Take logs of both side:
Use a rule of logarithms on the left
Divide both sides by
-------------------
Write as
Write on the right as
Multiply inner exponent by outer exponent on
the left side.
Subtract the exponents on the right:
Since the bases on each side are positive and
not equal to 1, we can equate the exponents:
Edwin
