When n->; When ∞, the limit is (1+1/n) n.
Note: x y stands for the y power of x.
With the increase of n, the cardinality is closer to 1, while the exponent tends to infinity. Does the result tend to 1 or infinity? Actually, it tends to be 2.7 1828 ... If you don't believe me, please use a calculator to calculate, and take n = 1, 10, 100 respectively. However, because the general calculator can only display about 10 digits, no matter how many digits, it can't be seen.
E is widely used in science and technology, and the logarithm with the base of 10 is generally not used. Taking e as the base can simplify many formulas, and it is the most "natural", so it is called "natural logarithm"