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Question

limx0eαxeβxsinαxsinβx=

A
0
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B
12
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C
13
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D
1
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Solution

The correct option is A 1
limx0eαxeβxsinαxsinβx
=limx0eβx(e(αβ)x1)(αβ)(αβ)x(αsin αxαxβsinβxβx) (use formula)
=1

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