4 Group 3
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Question 1.
The derivative of function
f
(
x
)
=
x
2
+
2
x
is
a)
f
′
(
x
)
=
2
x
+
2
x
ln
2
b)
f
′
(
x
)
=
2
x
+
2
x
c)
f
′
(
x
)
=
2
x
+
2
x
ln
2
d)
f
′
(
x
)
=
2
x
+
2
x
-
1
x
e)
f
′
(
x
)
=
x
+
2
x
Question 2.
The equation of the tangent line to the graph of function
f
(
x
)
=
(
x
-
1
)
(
x
-
2
)
(
x
-
3
)
at point
[
3
,
?
]
is
a)
y
=
2
x
-
5
b)
y
=
2
x
-
7
c)
y
=
2
x
-
5
d)
y
=
x
-
6
e)
y
=
2
x
-
6
Question 3.
Calculate
lim
x
→
0
cos
x
-
1
e
x
2
-
1
.
a)
-
1
2
b)
0
c)
1
2
d)
1
e)
-
1
Evaluate