406 STEP 5. Build Your Test-Taking Confidence
- What are all values ofxsuch that
∑∞
k= 1
(
x
2
)k
converges?
(A) 0 only
(B) − 2 <x<2 only
(C) −
1
2
<x<
1
2
only
(D) all real values
y
x
0
1
2
3
4
123
f
- The graph of a functionf is shown above.
Which of the following statements is/are true?
I. limx→ 1 f(x)exists
II. f( 1 )exists
III. limx→ 1 f(x)= f( 1 )
(A) I only
(B) II only
(C) I and II only
(D) I, II, and III
- What is the area of the region between the
graph ofy=
1
x^2
and thex-axis forx≥4?
(A) −
1
4
(B) −
1
2
(C)
1
4
(D)
1
2
- Ifg(x) is continuous for all real values ofx,
then
∫b/ 3
a/ 3
g(3x)dx=
(A)
1
3
∫b
a
g(x)dx
(B) 3
∫b
a
g(x)dx
(C)
1
3
∫ 3 b
3 a
g(x)dx
(D)
∫b
a
g(x)dx
8.
∑∞
n= 0
3 n+^2
4 n
=
(A)
3
4
(B) 4
(C) 9
(D) 36
- The limh→ 0
ln(x+h−3)−ln(x−3)
h
is
(A) ln(x−3)
(B)
1
ln(x−3)
(C)
1
x+ 3
(D)
1
x− 3