For each function, find the critical points of f, identify what open intervals is f increasing or decreasing, and identify at what points does f have a local minimum or maximum value. Show all work g(x)= x^2 square root of 5-x

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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For each function, find the critical points of f, identify what open intervals is f increasing or decreasing, and identify at what points does f have a local minimum or maximum value. Show all work

g(x)= x^2 square root of 5-x

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The critical points of a function f(x) are the (x,y) points such that, for the x-values of these points, the derivative of the function is either 0 or does not exist. These x-values are called critical values or critical numbers. If a critical value is x=xc, then the critical point will be xc,fxc

Once we identify these values we can analyze the first derivative of the function in the intervals between consecutive critical values.

The function will be increasing in the intervals in which the first derivative is positive and

The function will be decreasing In the intervals in which the first derivative is negative.

Further to find the local maximum and minimum values we must evaluate the second derivative of the function at these critical values

The function has a local maximum if f''xc<0 and

The function has a local minimum if f''xc>0

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