(
one
)
First, multiple-choice questions (
17
Little problem, every little problem
five
Points * * *
Eighty-five
Integral)
1
、
Set set
A={0
3}
B={0
three
4}
C={ 1
2
3}
rule
(
B
∪
c)
∩
a = _ _ _ _ _ _ _ _ _ _ _ _ _
A
、
{0， 1，2，3，4} B
, empty set
C
、
{0，3} D
、
{0}
2
, non-zero vector
a
∥
b
Necessary and sufficient conditions for
___________________
A
、
a=b B
、
A =-b
、
a=
b D
、
There are non-zero real numbers.
k，a=kb
three
quadratic function
y=x
2
+4x+ 1
The minimum value of is
_________________
A
、
1 B
、
-3 degrees Celsius
、
three-dimensional
、
-4
four
In arithmetic progression.
{a
n
}
middle
,
known
a
1
=-
2
three
, one
six
= 1
rule
__________
A
、
a
three
=0 B
、
a
four
=0 degrees Celsius
、
a
five
=0 days
、
Everything is not zero.
five
, function
y=x
three
+2 sinx _ _ _ _ _ _ _ _ _ _ _ _
A
、
odd function
B
、
Even function
C
、
It is neither a odd function nor an even function.
D
、
already
Odd functions and even functions.
six
Known parabola
y=x
2
,
Order again
x=2
The slope of tangent at is
___________
A
、
2 B
、
3 degrees celsius
、
1 D
、
four
seven
, straight line
L
And straight line
3x-2y+ 1=0
Vertical, then
1
The slope of is
__________
A
、
3/2 B -3/2 C
、
2/3 dimension
、
-2/3
eight
, known
a
=
(
three
2
)
b
=(-4,6),
rule
a
b
=____________
A
、
4 B
、
0 degrees celsius
、
-4 D
、
five
nine
, hyperbola
nine
2
y
-
five
2
x
= 1
The focal length of is
___________
A
、
4 B
、
14
C
、
2
14
D
、
eight
10
, from
13
Choose from the students.
2
People as vice president, different election results * * * have ().
A
、
26 B
、
78 degrees celsius
、
156 D
、
169
1 1
if
f(x+ 1)=x
2
+2x，
rule
f(x)=_________
A
、
x
2
- 1 B
、
x
2
+2x+ 1°C
、
x
2
+2x D
、
x
2
+ 1
12
, setting
tanx=
four
three
,
and
cosx & lt0,
rule
cosx
The value of is.
_______
A
、
-
five
three
B
、
five
three
C
、
five
four
D
、
-
five
four
13
Known vector
A, b
satisfy
a
=4
b
=3，& lta，b & gt=30
rule
ab=
A
、
three
B
、
six
three
C
、
6 D
、
12
14
, function
y=sin(3x+
four
)
minimal positive period
________
A
、
three
B
、
C
、
three
2
D
、
three
15
, straight line
2x-y+7=0
Circled (
x- 1
)
2
+(y+ 1)
2
=20
A
Leave each other.
B
get in touch with
C
, intersect but the straight line does not pass through the center of the circle
D
, intersection, straight line through the center of the circle.
16
, known quadratic function
y=x
2
+ax-2
The symmetry axis equation of is
x= 1，
Then the vertex coordinates of the function.
______
A.
(
1
-3
)
B.
(
1
- 1
)
C.
(
1
)
D
(
- 1
-3
)
17
, ellipse
9x
2
+ 16y
2
= 144
The focal length of is
_______
A
、
10 B
、
5 degrees Celsius
、
2
seven
D
、
14