解一道不等式
0<4x^2-11x-3<3
参考答案:4x^2-11x-3<3
=>4x^2-11x-6<0
=>x=(11-根号217)/8或x=(11+根号217)/8
x=((11-根号217)/8,(11+根号217)/8)
4x^2-11x-3>0
(4x+1)(x-3)>0
(负无穷,-1/4)U(3,正无穷)
最终x==((11-根号217)/8,-1/4)
0<4x^2-11x-3<3
参考答案:4x^2-11x-3<3
=>4x^2-11x-6<0
=>x=(11-根号217)/8或x=(11+根号217)/8
x=((11-根号217)/8,(11+根号217)/8)
4x^2-11x-3>0
(4x+1)(x-3)>0
(负无穷,-1/4)U(3,正无穷)
最终x==((11-根号217)/8,-1/4)