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- Xuhui District 20 13 Mathematical Junior Middle School Model Test Solution
Xuhui District 20 13 Mathematical Junior Middle School Model Test Solution
1. According to c=3 and OA:OB= 1:3, OB=OC, we know that A( 1, 0) B (3,0), (∫A is on the left side of B and AB is on the same side of the origin).
Find a= 1 and b=-4.
2. The easy-to-know symmetry axes are x=5/2, ∴A(4,0), ∴n=2 (OC2=OA×OB)m= 1/2.
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