## What are the critical numbers of a function?

Critical numbers tell you the points where the graph of a function changes direction.

At these points, the slope of a tangent line to the graph will be zero, so you can find critical numbers by first finding the derivative of the function and then setting it equal to zero.

The solutions will be the critical numbers.

## How do you find the maximum and minimum of a function?

Pre-Calculus – Finding the maximum or minimum of a function

## What do critical numbers tell you?

A critical point is a point in the domain (so we know that f does have some value there) where one of the conditions: f'(c)=0 or f'(c) does not exist, is satisfied. If f has any relative extrema, they must occur at critical points.

## How do you find the local minimum?

Finding Local Maximum and Minimum Values of a Function –

## How do you find if a function is increasing or decreasing?

The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.

## What is the maximum in math?

Maximum, In mathematics, a point at which a function’s value is greatest. If the value is greater than or equal to all other function values, it is an absolute maximum. In calculus, the derivative equals zero or does not exist at a function’s maximum point.

## How do you find the range?

Summary: The range of a set of data is the difference between the highest and lowest values in the set. To find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.

## How do you find the absolute maximum and minimum of a function?

Finding Absolute Maximum and Minimum Values – Absolute