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Mathematics
Mathematics
Problem
If
f
(
x
)
=
2
x
2
−
1
f(x) = \sqrt{2x^2 - 1}
f
(
x
)
=
2
x
2
−
1
and
y
=
f
(
x
2
)
y = f(x^2)
y
=
f
(
x
2
)
, then
d
y
d
x
\frac{dy}{dx}
d
x
d
y
at
x
=
1
x = 1
x
=
1
is a. 1 b. -1 c. -2 d. 2
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