*Graph of exponential functions

*Graph of exponential functions

Functions y = a^x, a < 1 & y = a^{– x}, a > 1 are exponentially decreasing. Functions y = a^x, a > 1 & y = a^{– x}, a<1 are exponentially increasing.

The y intercept of the function y = a^x is point (0, 1). If a = e (2.71828) then y = e^x is called natural exponential function.