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Mathematics
Mathematics
Problem
A function
y
y
y
satisfies
d
y
d
x
=
sec
2
x
\dfrac{dy}{dx}=\sec^{2}x
d
x
d
y
=
sec
2
x
and
y
(
0
)
=
−
1
y(0)=-1
y
(
0
)
=
−
1
. Determine
y
(
π
4
)
y\!\left(\dfrac{\pi}{4}\right)
y
(
4
π
)
. a)
1
1
1
b)
−
1
-1
−
1
c)
0
0
0
d)
2
−
2
\sqrt{2}-2
2
−
2
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