Question

what is a formal of E square

Answer 1

number e is a mathematical constant that is the base of the natural logarithm: the unique number whose natural logarithm is equal to one. It is approximately equal to 2.71828, and is the limit of (1 + 1/n)n as napproaches infinity, an expression that arises in the study of compound interest. It can also be calculated as the sum of the infinite series

Answer 2

side
$side \times side = e \: tiangle$