
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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F.3

Transcribed Image Text:For sin 2x + cos x = = 0, use a double-angle or half-angle formula to simplify the equation and then find all
solutions of the equation in the interval [0, 2π).
The answers are
x1 =
x2 =
x3
||
x4 =
with 1 < x2 < x3 < x4.
2
"
and
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