UPSC NDA II 2018 Mathematics Solved Paper

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Question : 91 of 120

Marks: +1, -0

If u=eax‌sin‌bx and v=eax‌cos‌bx then what is u

du

dx

+v

dv

dx

equal to ?

[NDA II 2018]

ae2ax
(a2+b2)eax
abe2ax
(a+b)eax

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