For the quadratic function f (x) = −2(x+1)2 +2, find the vertex, x−intercepts (if possible), y−intercept, then sketch the graph

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 the quadratic function f (x) = −2(x+1)2 +2, find the vertex, x−intercepts (if possible), y−intercept,
then sketch the graph

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I have never seen this way before, and it is not easy to follow. How did you go from 0 to 1 on the right side? I am use to making these kinds of things  into a quadratic formula

 

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