#F
limit (sin 3x - cos 5x ) / (sin 3x + sin 5x)
x→0
limit ( sin 3x/x - cos 5x/x) / (sin 3x/x + sin 5x/x)
= ( 3 - 1/0) / (3 + 5)
= (3 - ∞) /(8)
= ∞
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#F
limit (sin 3x - cos 5x ) / (sin 3x + sin 5x)
x→0
limit ( sin 3x/x - cos 5x/x) / (sin 3x/x + sin 5x/x)
x→0
= ( 3 - 1/0) / (3 + 5)
= (3 - ∞) /(8)
= ∞