内容正文:
lJl:.f!iiii?t 120 ?t , ~~ll'f(ii] 120 ?t~ .
-- ~~B <Tft388<J~ ~ ~ ~· · RW- 1-S~¾E~8<J . -~82,t. ~W ,t)
1. Jw 1-Jl . ~ El3 4 1- ): ,J,*fl lilJ f(,J + .ii: 1f 1*f!l'lliltft'1 J1 f•I 1* , t: frJ li: U Ill :le
1
A . y = x i
1
A. -
12
8 . .xy = 8
I
B. -
8
A . Wiili1-.f1l~8<J ~~*
C . :ff Wi 'I' if .ffl ~1¥.i ~l/&m
I I
8 . C.
2
C. y =-
x+S
s . m 1il ~ ffi ~
Eb
D.
3
D . y = - + 5
X
D. ~ if! ~ ![ffi~ ll lf?$t
I
C.
4
1
D.
2
6. (£6A BC.. L C = 90 • . :tr BC= 8 , AC = 6 . ;_II] cosA a<Jffi;i;J
4
A . 3
3
8 .
4
4
C.
5
3
D.
5
A. :If D iafF
C ~.,._ . .,.J"' -" . ~ . l .:!.. ir- J. ,\
A. (0 , 3)
y
B. (I , 2)
C
.. · ~
. •. :.:\_ . . . -··· D
•• .. -·· B - o:o<+-'-'-----='----+ x
C. (2 , 2) D . (2 , I)
9 . ja.J(lj , A. 8 ~ & lt(JllPEtfiy =~ OO~ ..l: tlli g , EA ..!. y.flli-f c . EB ..L x .flll D , AC=BD=.!.oc,
X 5
A . 8 B. 10 C. 12 D. 16
10. M1/IJ~ y = axi +bx +c(a., 0) !IIJOO ffrffe . r J 1J!;a ~ , (D b2 - 4ac > 0: @ a +b + c = 2 ;
@ abc< 0, ® a -