Euler Constant
When I read about logarithm for first time in High school I
understood as it as “The logarithm of a number is the exponent to which a base(usually 10) must be raised to produce that number”
For example, the logarithm of 1000 to base 10 is 3, because
1000 is 10 to the power 3: 1000 = 10 ×10 ×10 = 103. More generally, if x = by,
then y is the logarithm of x to base b, and is
written y = logb(x), so log10(1000)
= 3. This was quite reasonable to understand.