1. f(x) = 2(x + 1)2 + 3 a) What is the sign of the leading coefficient? b) Does the parabola open upward or downward? c) What is the vertex of the parabola? d) Find the intervals for which f is increasing: Find the intervals for which f is decreasing:
1. f(x) = 2(x + 1)2 + 3 a) What is the sign of the leading coefficient? b) Does the parabola open upward or downward? c) What is the vertex of the parabola? d) Find the intervals for which f is increasing: Find the intervals for which f is decreasing:
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section: Chapter Questions
Problem 17RE
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Question
Expert Solution
Step 1
The leading coefficient is = 2
It is a positive number
Answer(a): Positive
Step 2
b) Since the leading coefficient is positive so it opens upwards.
c)
Compare these two equations
So, a=2 , h=-1 , k= 3
So, vertex= (h,k)= (-1,3)
Answer(c): (-1,3)
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