On what interval is the following function positive. f (x) = -z² -2x + 8

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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On what interval is the following function positive. f (x) =-r² - 2z + 8
Transcribed Image Text:On what interval is the following function positive. f (x) =-r² - 2z + 8
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