1
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38
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1
.
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II
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T5)
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II
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T6)
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b
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B
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C
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D
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銆愬懡棰樻剰鍥俱�?/p>
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e
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=
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y
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楂樿�冪悊绉懧?/p>
T11)
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F
1
,
F
2
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C
:
-
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a
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0,
b
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0)
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,
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,
O
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.
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F
2
浣?/p>
C
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,
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,
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C
鐨勭蹇冪巼涓?/p>
(
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.
B
.
2
C
.
D
.
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,
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,
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,
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.
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:
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.
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C
.
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:
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bx
-
ay
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鍒欑洿绾?/p>
PF
2
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ax
+
by
-
ac
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鐢?/p>
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P
,
鐢?/p>
F
1
(-
c
,0)
鍙?/p>
|
PF
1
|=
|
OP
|,