f
f
5. Let f be a differentiable function such that
f
3
15
,
f
6
,
3
3
, and
8
6
. The
2
1
g
function g is differentiable and
g x
f
x
for all x . What is the value of
3
?
1
1
1
1
(A)
(B)
(C)
(D)
2
8
6
3
g
(E) The value of
3
cannot be determined from the information given
6. Let f be a continuous function on the closed interval
3, 6
. If
f
3
and
1
f
6
, then the
3
Intermediate Value Theorem guarantees that
(A)
f
0
0
4
(B)
f c
for at least one c between 3 and 6
9
(C)
1
f x
3
for all x between 3 and 6
f c for at least one c between 3 and 6
(D)
1
(E)
f c
0
for at least one c between 1 and 3
3
7. The first derivative of the function f is defined by
f x
sin
x
x
for 0
. On what interval(s)
x
2
is f increasing?
x
x
x
(A) 1
1.445
(B) 1
1.691
(C) 1.445
1.875
(D) 0.577
x
1.445
and 1.875
x
2
(E) 0
and 1.691
x
1
x
2