Knowledge expert (Question: 273458.0 )

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ankit

· started a discussion

· 1 Months ago

Knowledge expert (Question: 273458.0 )

what u have written in reply :"Here the question asking for what minimum values of K gives positive roots. if we take K= 4, we get the equation X^2-6X+9 its roots are x=-1 and x=3, here we get negative root thus we can't take K=4":
kaha se aapki ye equation x=-1 ke liye satisfy hoga x=-1 aapko 16 dega naaki zero...and secpnd thing k=0 aapko x=-1 dega which is also wrong plz provide the right solution else dunt provide we can solve on our own..

Question:

For what minimum of k, x² – 2(k – 1)x + (2k + 1) = 0 has positive roots.

Options:

$- \frac{1}{2}$

Solution:

Ans: (c)

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