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`"If " int sinx d(secx)=f(x)-g(x)+c,` then

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`"If " int sinx d(secx)=f(x)-g(x)+c,` then
A. `f(x)=secx`
B. `f(x)=tanx`
C. `g(x)=2x`
D. `g(x)=x`
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1 Answer

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Best answer
Correct Answer - B::D
`int sinx d(secx)=int sinx(d(secx))/(dx)dx`
`=int sinx secx tan x dx`
`=int tan^(2)x dx`
`=int(sec^(2)x-1)dx`
`=tanx-x+C`
` :. f(x)=tanx,g(x)=x`
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