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Problem
Problem
Let
f
(
x
)
=
∫
1
x
(
2
−
t
2
)
d
t
f(x) = \int_{1}^{x} \sqrt{(2-t^2)}\,dt
f
(
x
)
=
∫
1
x
(
2
−
t
2
)
d
t
, the real roots of the equation
x
2
−
f
′
(
x
)
=
0
x^2 - f'(x) = 0
x
2
−
f
′
(
x
)
=
0
are
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