Unit 8 Progress Check: FRQ Part B - PCHS AP CALCULUS
AP Calculus BC
Unit 8 Progress Check: FRQ Part B
Scoring Guide
1. NO CALCULATOR IS ALLOWED FOR THIS QUESTION.
Show all of your work, even though the question may not explicitly remind you to do so. Clearly label any functions, graphs, tables, or other objects that you use. Justifications require that you give mathematical reasons, and that you verify the needed conditions under which relevant theorems, properties, definitions, or tests are applied. Your work will be scored on the correctness and completeness of your methods as well as your answers. Answers without supporting work will usually not receive credit.
Unless otherwise specified, answers (numeric or algebraic) need not be simplified. If your answer is given as a decimal approximation, it should be correct to three places after the decimal point.
Unless otherwise specified, the domain of a function is assumed to be the set of all real
numbers for which
is a real number.
Let be the region in the first quadrant bounded by the graph of
vertical lines
and
for
, as shown in the figure above.
, the -axis, and the
Copyright ? 2017. The College Board. These materials are part of a College Board program. Use or distribution of these materials online or in print beyond your school's participation in the program is prohibited.
Page 1 of 4
AP Calculus BC
Unit 8 Progress Check: FRQ Part B
(a) Find the area of region in terms of .
Scoring Guide
Please respond on separate paper, following directions from your teacher.
(b) Write, but do not evaluate, an expression in terms of , involving one or more integrals, that gives the perimeter of region .
Please respond on separate paper, following directions from your teacher.
(c) Region is rotated about the -axis to form a solid. As increases without bound, find the volume of the solid or show that the volume is infinite.
Please respond on separate paper, following directions from your teacher.
Part A Select a point value to view scoring criteria, solutions, and/or examples and to score the response.
0
1
2
3
The student response accurately includes all three of the criteria below.
definite integral antiderivative answer
Solution:
Copyright ? 2017. The College Board. These materials are part of a College Board program. Use or distribution of these materials online or in print beyond your school's participation in the program is prohibited.
Page 2 of 4
AP Calculus BC
Unit 8 Progress Check: FRQ Part B
Scoring Guide
Part B Select a point value to view scoring criteria, solutions, and/or examples and to score the response.
0
1
2
3
The student response accurately includes all three of the criteria below.
integrand expression
Solution:
Part C
The expression
earns the first two points.
Select a point value to view scoring criteria, solutions, and/or examples and to score the response.
0
1
2
3
The student response accurately includes all three of the criteria below.
Copyright ? 2017. The College Board. These materials are part of a College Board program. Use or distribution of these materials online or in print beyond your school's participation in the program is prohibited.
Page 3 of 4
AP Calculus BC
Unit 8 Progress Check: FRQ Part B
improper integral expression definite integral with limit notation answer
Solution:
Scoring Guide
Copyright ? 2017. The College Board. These materials are part of a College Board program. Use or distribution of these materials online or in print beyond your school's participation in the program is prohibited.
Page 4 of 4
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