NDA2016MathematicsQuadratic EquationActual
Paragraph: 2 x^2+3 x- -0 has roots -2 and while the equation x^2-3 mx +2 ~m ^2=0 has both roots positive, where 0 and 0 . Question: If , 2,2 ~m are in GP, then what is the value of m ?
Options
- A1
- B2
- C4
- D6
Correct answer
A. 1
Step-by-step solution
= 1 2 , 2,2 ~m are in GP. aligned & 2 = 2 m 2 & ~m = 2 =2 2 1 & ~m =4 & m = 1 2 4 =1 aligned