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If cosx is an I.F. of (dy)/(dx)+py=Q, th...

If `cosx` is an I.F. of `(dy)/(dx)+py=Q`, then p

A

`tanx`

B

`-tanx`

C

`p=(f^(1)(x))/(f(x))` where `f(x)=cosx`

D

`((d)/(dx))(cosx)

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