###### Asked in RuneScape

RuneScape

# 4 Log Removal?

## Answer

###### Wiki User

###### July 03, 2009 2:26AM

99.99% removal

## Related Questions

###### Asked in Math and Arithmetic, Algebra, Calculus

### Is log 5 equivalent to log 5-log 20?

No. log 20 is a positive number , so it you subtract it from log
5 you get less than log 5.
However, log10 5 = 1 - log102 = 2- log1020 .
or
log 5 - log 20 = log 5 - log 4*5 = log 5 - (log 5 + log 4) = log
5 - log 5 - log 4 = - log 4
But we do not need to do all of these computations, because log
5 is different from log 5 - log 20 by the law of the equality that
says two equals remain equal if and only if we subtract (in our
case) the same thing from them.

###### Asked in Math and Arithmetic, Algebra, Calculus

### How do you solve 4 to the power of x equals 128?

If we take the logarithm of both sides, then it is log(4^x) =
log(128). Then from logarithm rules, this can be changed to:
x*log(4) = log(128), then x = log(128)/log(4). You can punch this
into a calculator and get the answer, but what if we use log base
2, we don't need a calculator. So log2(4) = 2, because 2Â² = 4. And
log2(128) = 7, because 2^7 = 128. So we have x = 7/2 = 3.5,
then you can check your answer: 4^3.5 = (4^3)*(4^.5). So 4 cubed =
64, and 4 raised to the 1/2 power is the square root of 4, which is
2. So 64 times 2 = 128.

###### Asked in Calculus

### What is integral tan3x sec2x?

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