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Mathematics
Mathematics
Problem
Consider two parametric curves on
0
≤
t
≤
π
4
0\le t\le \dfrac{\pi}{4}
0
≤
t
≤
4
π
with a common
x
x
x
-coordinate given by
x
(
t
)
=
t
x(t)=t
x
(
t
)
=
t
. The first curve has
y
1
(
t
)
=
cos
t
y_{1}(t)=\cos t
y
1
(
t
)
=
cos
t
and the second has
y
2
(
t
)
=
sin
t
y_{2}(t)=\sin t
y
2
(
t
)
=
sin
t
. What is the exact area between the two curves over this interval? a)
2
2
\dfrac{\sqrt{2}}{2}
2
2
b)
1
2
\dfrac{1}{2}
2
1
c)
2
−
1
\sqrt{2}-1
2
−
1
d)
1
−
2
1-\sqrt{2}
1
−
2
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