Maths remainder, 二次方?

2016-01-11 9:05 am
Please answer the following questions in the photo
更新1:

ans 2 questions in the photo

回答 (1)

2016-01-11 9:39 am
✔ 最佳答案
38.
OR = y(0) = c
因為 Q 點的 y 值與 R 點的 y 值相同, 故可設 Q 點座標為 ( x , c )
c = - x^2 + bx + c
x^2 - bx = 0
x( x - b ) = 0
x = 0 , b
故 Q = ( b , c )
OPQR 面積 = OR * RQ = c * b
Ans: A

39.
P(x)
= Q(x)*( 5x - 2 ) + R
= [ - Q(x) ]*( 2 - 5x ) + R
Ans: R


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