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Let a,b,c be the sides of a triangle. No...

Let a,b,c be the sides of a triangle. No two of them are equal and `lamda in R` If the roots of the equation
`x ^(2) +2 (a+b+c)x+3 lamda (ab+bc+ca)=0` are real distinct, then

A

`lambda lt (4)/(3) `

B

`lambda gt(5)/(3) `

C

`lambda in ((4)/(3),(5)/(3))`

D

`lambda in ((1)/(3),(5)/(3))`

Text Solution

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The correct Answer is:
A
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