ln3+ln2=ln(3*2)=ln6

The basic form of ln3*ln2 remains unchanged.

Ln3/ln2=log 2 is the cardinal number, and 3 is the real number.

1, in particular, we call the logarithm with the base of 10 as the common logarithm and write it as lgN.

2. Logarithm with irrational number e (e = 2.71828 ...) as the base is called natural logarithm, and it is recorded as lnN.

3. Zero has no logarithm. In the range of real numbers, negative numbers have no logarithm. In the range of imaginary numbers, negative numbers are logarithms.

4.e(2k+ 1)πi+ 1=0, so ln(- 1) has multiple periodic values, ln (-1) = (2k+1) π i. In this way, any negative number. For example: ln(-5)=(2k+ 1)πi+ln 5.