Exponential Functions:
is a function that can be written in the form… *f(x) = c * ax*;
Where the number ‘c’ and ‘a’ are constants.
‘c’ is called the initial value (y-intercept). ‘a’ is called the growth factor.
If a > 1; the function is growing.
If a < 1; the function is decaying.
Growing: increasing by a FIXED percentage.
Decaying: decreasing by a FIXED percentage.
Natural Exponential Function:
is a function that can be written in the form… f(x) = ex;
Where e ≈ 2.71828…
“A positive (number) to the positive power is positive. Same can be said for a positive to the negative power.”
Compound Interest Formula:
A = P(1 + (r/n))nt
Where…
P => Principal.
r => annual interest rate (as a decimal).
n => number of compoundings in a year.
t => time in years.
A => accumulated value.