integral dari Π/4 sampai Π/2 (2 cos (Π/4 - x)) dx=
Matematika
putrijohanti
Pertanyaan
integral dari Π/4 sampai Π/2 (2 cos (Π/4 - x)) dx=
1 Jawaban
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1. Jawaban Anonyme
Int (2 cos (π/4 - x)) dx [π/2 _ π/4]
= -2 Int d(sin (π/4 - x))
= -2sin (π/4 - x)
= -2sin (π/4 - π/2) + 2sin (π/4 - π/4)
= -2sin (-π/4)
= -2(-1/2 √2)
= √2