SOLUTION: 2x e = 8 not sure how to type it but e raised to the 2x = 8

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Question 168767: 2x
e = 8
not sure how to type it but e raised to the 2x = 8
Found 2 solutions by jim_thompson5910, stanbon:
Answer by jim_thompson5910(21685) About Me  (Show Source):
You can put this solution on YOUR website!
e%5E%282x%29=8 Start with the given equation


ln%28e%5E%282x%29%29=ln%288%29 Take the natural log of both sides


2x%2Aln%28e%29=ln%288%29 Rewrite the left side using the identity ln%28x%5Ey%29=y%2Aln%28x%29%29. In other words, pull down the exponent and place it in front of the "ln"


2x%281%29=ln%288%29 Take the natural log of "e" to get 1


2x=ln%288%29 Multiply


x=ln%288%29%2F2 Divide both sides by 2 to isolate x


So the answer is x=ln%288%29%2F2 which approximates to x=1.03972

Answer by stanbon(48569) About Me  (Show Source):
You can put this solution on YOUR website!
e raised to the 2x = 8
============================
Take the natural log of both sides to get:
2x = ln(8)
x = (1/2)*2.07944
x = 1.03972
================
Cheers,
Stan H.