Question
Download Solution PDF∫(cos x - sin x)/
- (1, –3)
- (1, 3)
- (–1, 3)
- (3, 1)
Answer (Detailed Solution Below)
Option 2 : (1, 3)
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Detailed Solution
Download Solution PDFభావన:
లెక్కింపు:
ఇచ్చిన,
∫(cos x - sin x)/
I = ∫(cos x - sin x)/
sin x + cos x = t ⇒ (cos x -sin x ) dx = dt అని ఉంచండి.
మరియు, 1 + sin 2x = t2
⇒ I = ∫dt/√(8-(t2 -1))
= ∫dt/(9-t2 )
= sin-1 (t/3) + c
= sin-1 (sin x + cos x)/3 + c = a sin-1 (sin x + cos x)/b + c
⇒ a = 1 మరియు b = 3
∴ క్రమ జత (a, b) (1, 3)కి సమానం.
సరైన సమాధానం ఎంపిక 2.
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