### Increasing/Decreasing and Derivatives 1

Calculus: We define increasing and decreasing for a function on a region. Then we show that if the first derivative of f(x) is negative on a region, then f(x) is decreasing on that region. Examples are (a) f(x) = sqrt(x) on the nonnegative real numbers, and (b) f(x) = 1/x on the positive real numbers.

Length:
08:58