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8 answers

4^4=16*16=256 so the answer is just 4

2007-04-23 15:19:18 · answer #1 · answered by bruinfan 7 · 0 0

A log is an exponent. Thus, your solution is the answer to the equation 4^x = 256. Since 4^4 = 256, your answer is 4.

2007-04-23 22:22:22 · answer #2 · answered by iuneedscoachknight 4 · 0 0

log 256 base 4 = log 4^4 base 4(4*4*4*4 =256)

= 4log 4 base 4 (power rule says dat wen a power is dere u must
multiply it wid the log so take 4 to multiplied wid the log)
=4*1 ( log a to the base a =1 ie wen a no has the same no as the base it is equal to 1)
=4

or

log 256 to the base 4 = log 16^2 base 4
=2log 16 base 4
=2log 4^2 base 4
=2*2 log 4 base 4
=4*1
=4
hope u understood the nxt method also invovled the same type of steps

2007-04-23 22:21:43 · answer #3 · answered by sunshine gal 4 · 0 0

log (base4) 256
= log (base4) 4^4
= 4

'cause the base of the log and the base of the exponent "undo" each other due to the inverse property of logs and exponents with equal bases

2007-04-23 22:46:37 · answer #4 · answered by Kathleen K 7 · 0 0

log(base 4)256
= log(base 4) (4^4)
= 4 * [log(base 4) (4)] --- using log(base a)(b^c) = c*log(base a) (b)
= 4 * 1 --- using log(base a) (a) = 1
= 4

2007-04-23 22:28:01 · answer #5 · answered by QiQi 3 · 0 0

I know you this question has already been answered correclty. But another way of doing this is taking 256^1/4, and you can also get the answer that way.

2007-04-23 23:15:10 · answer #6 · answered by Anonymous · 0 0

first get the log and its sub by itself. to do that make the expression equal to a different number ( i beielve n or zero...can't remember)

then you just make the base the exponent and solve!

2007-04-23 22:20:36 · answer #7 · answered by Anonymous · 0 0

log (base b) a = ln(a) / ln(b)

So...
log (base 4) 256 = ln(256) / ln(4) = 4

2007-04-23 22:23:11 · answer #8 · answered by JESV 2 · 0 0

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