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2007-12-08 22:06:20 · 6 answers · asked by Anonymous in Science & Mathematics Mathematics

6 answers

Take the nth power of each side

So we end up with

64 = n^2

So we want a number that, when squared, equals 64.

The answer is positive or negative 8

2007-12-08 22:10:56 · answer #1 · answered by Anonymous · 0 1

64=2^6
log_n 64 = 2
log_b a=c
a=b^c
a=64,c=2 Thus,64=n^2
2^6=n^2
2^(2*3)=n^2
8^2=n^2
n=8

2007-12-09 06:59:00 · answer #2 · answered by Anonymous · 0 1

64 = 8²
log8 64 = 2
n = 8

2007-12-09 06:21:26 · answer #3 · answered by Como 7 · 2 0

just 8, you cant have logs with the base of negative numbers, (well you can, but would not be a continuous function, and thus not very useful). not that -8 squared isn't 64

2007-12-09 06:24:30 · answer #4 · answered by iheart808 3 · 0 1

log[base n](64) = 2

Convert to exponential form. Recall that
b^c = a if and only if log[base b](a) = c.

n^2 = 64

Solve for n. If I recall correctly, the base of a log can never be negative; therefore, although

n = +/- 8

We reject the negative solution.

2007-12-09 06:17:11 · answer #5 · answered by Puggy 7 · 0 0

it is asking:
n^2 = 64
therefore n = ±8

2007-12-09 06:11:18 · answer #6 · answered by mountainpenguin 4 · 0 1

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