Mathematics
Senior High
Resolved
是不是像這種題目,0這個解被算出來兩次就代表二次函數
已知f(x)是首項係數為1的三次多項式,且不等式f(x)>0的解為
0<x<1或x>1,求不等式f(x)>x的解。
fon = x (x-1)² > x
4
bmx sx (x = 2x+1)
2
2±2
2
x 2 x x x x x 2 ± √ 4 x 2 x 0
X-2x70
X(X-2X)70
2
7 2 X 0
e
084824
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