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Let f:RR be defined by f(x)=01x2+t22tdt

Then the curve y=f(x) is

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a
an ellipse
b
a straight line
c
a parabola
d
a hyperbola

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detailed solution

Correct option is C

f(x)=x2∫01 dt2−t+∫01 t22−tdt=−x2log |2−t|01+∫01 −t−2+42−tdty=x2log 2+−12−2+4log 2which represent a parabola.


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The value of 01r=1n(x+r)k=1n1x+kdx is


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