About Lesson
14.9 Rational Quadratic Functions 代数式的最大值和最小值
(1)
Find the maximum and minimum values of function f (x) = , where x
R.
求函数f (x) = , 其中 x
R的最大值和最小值.
Answer:
3, 

(2) Find the possible range of values of
if x is real.

若x 是实数求 的可能范围。
Answer:
0, 1

(3) Find the range of
where
is real for x
R.



若为实数当 x
R,求
的范围
Answer:

(4) Find the range of
where
is real for x
R.



若 为实数当 x
R,求
的范围.
Answer:
