Washer Method: Revolving Around x/y Axes
AP Calculus BC · Flashcards · Application
AP CALCULUS BC · FLASHCARDS
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QUESTION
Identify the function used as
R
(
x
)
R(x)
R
(
x
)
:
y
=
1
x
y = \frac{1}{x}
y
=
x
1
,
x
x
x
from
1
1
1
to
2
2
2
.
QUESTION
Identify
r
(
x
)
r(x)
r
(
x
)
for
y
=
x
−
1
y = x - 1
y
=
x
−
1
revolved around x-axis,
x
x
x
from
1
1
1
to
3
3
3
.
QUESTION
Identify the function used as
r
(
y
)
r(y)
r
(
y
)
:
x
=
y
2
x = y^2
x
=
y
2
,
y
y
y
from
0
0
0
to
1
1
1
.
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ANSWER
r
(
y
)
=
y
2
r(y) = y^2
r
(
y
)
=
y
2
. The function
x
=
y
2
x = y^2
x
=
y
2
serves as the inner radius.
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