2^x = 5/10
2^x = 1/2
2^x = 2^-1
hence x = -1
2007-12-22 10:50:05
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answer #1
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answered by jags20_us 2
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2^x = 0.5 = 2^(--1) => x = -- 1
2007-12-22 18:51:21
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answer #2
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answered by sv 7
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0.5 = 2^x
It could be that x = -1 because that's the only way the exponent can cause the 2 to become smaller
2007-12-23 13:01:24
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answer #3
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answered by Chau D 2
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0.5 = 1/2 = 2^-1.
So your equation is 2^x = 2^-1,
x ln 2 = -1 ln 2
x = -1.
2007-12-22 19:09:29
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answer #4
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answered by steiner1745 7
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there are any ways you can choose to solve this problem, but lets take the simplest way.
0.5=2^x
1/2=2^x
2^-1=2^x
thus, x=-1
2007-12-22 18:54:07
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answer #5
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answered by Harris 6
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0.5 = 2^x
log0.5 = x*(log2)
x=log(2)/log(.5)
x=0.30103/(-0.30103)
x= -1
2007-12-22 19:05:11
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answer #6
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answered by WhatWasThatNameAgain? 5
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