Ap 2005 calculus bc cover - College Board
AP? Calculus BC
2005 Scoring Guidelines
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AP? CALCULUS BC
2005 SCORING GUIDELINES
Question 1
1
+ sin (¦Ð x ) and g ( x ) = 4? x. Let
4
R be the shaded region in the first quadrant enclosed by the y-axis and the graphs
of f and g, and let S be the shaded region in the first quadrant enclosed by the
graphs of f and g, as shown in the figure above.
Let f and g be the functions given by f ( x ) =
(a) Find the area of R.
(b) Find the area of S.
(c) Find the volume of the solid generated when S is revolved about the horizontal
line y = ?1.
1
+ sin (¦Ð x ) = 4? x .
4
f and g intersect when x = 0.178218 and when x = 1.
Let a = 0.178218.
f ( x ) = g ( x ) when
(a)
a
¡Ò0 ( g ( x ) ? f ( x ) ) dx = 0.064 or 0.065
? 1 : limits
?
3 : ? 1 : integrand
?? 1 : answer
1
(b)
¡Òa ( f ( x ) ? g ( x ) ) dx = 0.410
(c)
¦Ð ¡Ò ( f ( x ) + 1)2 ? ( g ( x ) + 1)2 dx = 4.558 or 4.559
1
a
(
? 1 : limits
?
3 : ? 1 : integrand
?? 1 : answer
)
3:
{
2 : integrand
1 : limits, constant, and answer
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2
AP? CALCULUS BC
2005 SCORING GUIDELINES
Question 2
The curve above is drawn in the xy-plane and is described by the equation in
polar coordinates r = ¦È + sin ( 2¦È ) for 0 ¡Ü ¦È ¡Ü ¦Ð , where r is measured in
meters and ¦È is measured in radians. The derivative of r with respect to ¦È is
dr
= 1 + 2cos ( 2¦È ) .
given by
d¦È
(a) Find the area bounded by the curve and the x-axis.
(b) Find the angle ¦È that corresponds to the point on the curve with
x-coordinate ?2.
(c) For
¦Ð
................
................
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