Question 118Asked in BPSC TRE 2.0 (2023) Mathematics Class 9-10

If α, β, γ are the zeroes of the polynomial f(x) = x³ – px² + qx – r, then 1/(αβ) + 1/(βγ) + 1/(γα) is equal toयदि α, β, γ बहुपद f(x) = x³ – px² + qx – r के शून्यक हैं, तो 1/(αβ) + 1/(βγ) + 1/(γα) का मान है

यदि α, β, γ बहुपद f(x) = x³ – px² + qx – r के शून्यक हैं, तो 1/(αβ) + 1/(βγ) + 1/(γα) का मान है
  1. Ar/pr/p
  2. Bp/rp/r
  3. C–p/r–p/r
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (B) p/rp/r

Explanation

The sum equals (α + β + γ)/(αβγ) = p/r.योग = (α + β + γ)/(αβγ) = p/r।

From BPSC TRE 2.0 (2023) Mathematics Class 9-10 — Previous Year Paper

This is question 118 of BPSC TRE 2.0 (2023) Mathematics Class 9-10 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.