Asked by ladybug
solve for the following exponetial equation.
1.4^x=(0.5)^-x
What is the exact answer?
A. x=
b. There is no solution.
1.4^x=(0.5)^-x
What is the exact answer?
A. x=
b. There is no solution.
Answers
Answered by
Henry
(1.4)^x = (0.5)^-x.
Take Log of both sides:
x*Log1.4 = -x*Log(0.5)
x*Log1.4 + x*Log(0.5) = 0
X(Log1.4+Log(0.5)) = 0
X*Log(1.4*0.5) = 0
X*Log(0.7) = 0
X = 0 / Log(0.7) = 0.
Take Log of both sides:
x*Log1.4 = -x*Log(0.5)
x*Log1.4 + x*Log(0.5) = 0
X(Log1.4+Log(0.5)) = 0
X*Log(1.4*0.5) = 0
X*Log(0.7) = 0
X = 0 / Log(0.7) = 0.
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