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JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

જો \(p\) અને \(q\) એ શુન્યેતર વાસ્તવિક સંખ્યા હોય અને  \({\alpha ^3} + {\beta ^3} =  - p\), \(\alpha \beta  = q\) થાય તો જે દ્રીઘાત સમીકરણના ઉકેલો \(\frac{{{\alpha ^2}}}{\beta },\frac{{{\beta ^2}}}{\alpha }\) થાય તે સમીકરણ મેળવો.  

  1. A \(px^2 -qx + p^2 = 0\)
  2. B \(qx^2 + px + q^2 = 0\)
  3. C \(px^2 + qx+ p^2 =0\)
  4. D \(qx^2 -px + q^2 = 0\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(qx^2 + px + q^2 = 0\)

Step-by-step Solution

Detailed explanation

Given \(\alpha^{3}+\beta^{3}=-p\) and \(\alpha \beta=q\) Let \(\frac{\alpha^{2}}{\beta}\) and \(\frac{\beta^{2}}{\alpha}\) be the root of required quadratic equation. So, \(\frac{\alpha^{2}}{\beta}+\frac{\beta^{2}}{\alpha}=\frac{\alpha^{3}+\beta^{3}}{\alpha \beta}=\frac{-p}{q}\)…
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