13. The solution to the polynomial inequality x² - 4 >0 is: a) x > 2 b) x>-2 c) x < -2 and x > 2 d) -2
13. The solution to the polynomial inequality x² - 4 >0 is: a) x > 2 b) x>-2 c) x < -2 and x > 2 d) -2
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:13. The solution to the polynomial inequality x² − 4 > 0 is:
a) x > 2
b) x>-2
c)
d) -2<x<2
14. For an acute angle, , of a right triangle, sin = sin 60° cos 45° - sin 45° cos 60°. Which
measurement is a possible size for ?
a. 45⁰
b. 15⁰
C.
d.
x < -2 and x > 2
60⁰
105⁰
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