Finding CX 2-BX+A > solution set of inequality 0
Solution: From the known A
Divide both sides of inequality CX * 2-BX+A > 0 by a,
Yes: (c/a) x 2-b/ax+ 1
It is known that the two roots of the equation AX 2-BX+C = 0 are E and R.
b/a=e+r
c/a=e*r
Substitute the above formula (1): erx2-(e+r) x+1< 0.
The two roots of the equation erx 2-(e+r) x+ 1 = 0 are 1/e and1/r.
0 & lte & ltx & ltr,
Solution: 0