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If y=e^(-x)cos2x then which of the follo...

If `y=e^(-x)cos2x` then which of the following differential equations is satisfied?

A

`(d^(2)y)/(dx^(2))+2(dy)/(dx)+5y=0`

B

`(d^(2)y)/(dx^(2))+5(dy)/(dx)+2y=0`

C

`(d^(2)y)/(dx^(2))-5(dy)/(dx)-2y=0`

D

`(d^(2)y)/(dx^(2))+2(dy)/(dx)-5y=0`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2015-MULTIPLE CHOICE QUESTIONS
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