lf α and β(α<β),are the roots of the equation x2+bx+c=0, where c < 0 < b, then
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a
0<α<β
b
α<0<β<|α|
c
α<β<0
d
α<0<|α|<β
answer is B.
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Detailed Solution
∵ α+β=−b,αβ=c ... (i)∵ c<0⇒αβ<0Let α<0,β>0∴ |α|=−α and α<0<β[∵α<β] ... (ii)From Eq. (i), we get −|α|+β<0 ⇒ β<|α| ... (iii)From Eqs. (ii) and (iii), we getα<0<β<|α|