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Question

Let f:RR be a continuous function satisfying

f(x)+x0tf(t)dt+x2=0
for all xϵR.Then


A

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B

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C

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D

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Solution

The correct option is B


f(x)+xf(x)+2x=0dydx+xy=2xI.F.=ex22y.ex22=ex22(2x)dx+Cex22.y=2ex22+Cy=2+Ceix22f(0)=0C=2f(x)=2ex221


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