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If 4^x = .5 them x=??

+2 votes
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If 4^x = .5 them x=??
posted Sep 28, 2014 by anonymous

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2 Answers

+1 vote

.5 = 1/2 or 2^(-1)
4^x = 2^(2x)

hence 2x = -1
x=-1/2

answer Sep 28, 2014 by Salil Agrawal
+1 vote

4^ x= .5
4 ^ x= 5 /10
4 ^ x = 1/2
( 2^2) ^ x=2 ^( -1)
2^(2*x)=2 ^ (-1)
on camparing
2x=-1

x= -1/2
answer Oct 31, 2014 by Dheeraj Kumar



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