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How to calculate logs
The calculation of log is the inverse process of power.

If the x power of a is equal to n (a >; 0, and a is not equal to 1), then the number x is called the logarithm of n with a as the base, and is recorded as x=logaN. Where a is called the base of logarithm and n is called real number.

Calculation method:

According to 2 3 = 8, we can get log2 8=3.

Extended data

Arithmetic of logarithm:

1、log(a) (M N)=log(a) M+log(a) N

2、log(a) (M÷N)=log(a) M-log(a) N

Log (m n = nlog (a)

4、log(a)b*log(b)a= 1

log(a) b=log (c) b÷log (c) a

Algorithm of exponent:

1, [a m] × [a n] = a (m+n) is the same as the base power, the base number is constant, and the exponents are added.

2.[a m]⊙[a n]= a(m-n) Divide by the power with the same base, and subtract the exponent with the same base.

3. [a m] n = the power of a (Mn), the cardinality is unchanged, exponential multiplication?

4. The power of the product of [ab] m = (a m) × (a m) is equal to the power of each factor, and then multiplied by the obtained power.