1.e is a constant irrational number and an infinite circulating decimal, so e is used to represent 2.7 1828 1828, so E-3 = 1/(E 3).

2.e is the natural logarithm (a commonly used value in mathematics), which is approximately equal to 2.7 1828.

The negative cube of e is equal to e-3.

The positive cube of e equals e 3.

If you really want to calculate, substitute the approximate value of 2.7 1828.

3. The positive cube of e is a result. The negative cube of e is 1/e 3.