This is the formula for continuously compounding interest where:

A = total amount P = principal or starting amount e = Euler's constant (about 2.718) r = rate as a decimal t = time in years

Algebra • Calculus

This is the formula for continuously compounding interest where:

A = total amount P = principal or starting amount e = Euler's constant (about 2.718) r = rate as a decimal t = time in years