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p के किस मान के लिए द्विघात समीकरण \(px^2 - 2x + 3 =0\) के मूल वास्तविक एवं समान होंगे ?

(A) \(1\)

(B) \(\frac 13\)

(C) \(3\)

(D) \(\frac 12\)

1 Answer

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Best answer

Correct option is (B) \(\frac 13\)

दिया गया द्विघात समीकरण है,

\(px^{2}-2 x+3=0\)

यहाँ,

\(a=p, b=-2 \text { and } c=3\)

वास्तविक एवं समान मूलों के लिए,

\(D =0\)

\(b^{2}-4 a c =0\)

\((-2)^{2}-4 \times p \times 3 =0\)

\(4-12 p =0\)

\(12 p =4\)

\(p =\frac{4}{12} \)

\(\therefore p =\frac{1}{3}\)

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