CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon


Question

Let x2(M3)x+M=0;MϵR be a quadratic equation.  If both the roots are greater than 2 then M lies in the interval


A
ϕ
loader
B
(3,)
loader
C
[9, 10)
loader
D
(3, 9]
loader

Solution

The correct option is C [9, 10)
I Δ0(M3)24M0Mϵ(,1][9,) (1)
II  f(2)>04(M3)2+M>0M<10 (2)
III b2a>2M32>2M>7 (3)
The intersection of (1) , (2) and (3) is Mϵ[9,10) 

Co-Curriculars

Suggest Corrections
thumbs-up
 
0


similar_icon
Similar questions
View More



footer-image