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JEE Mains · Maths · STD 12 - 6. Application of derivatives

સમીકરણ \(3 x^{4}+4 x^{3}-12 x^{2}+4=0\) ના ભિન્ન વાસ્તવિક ઉકેલની સંખ્યા મેળવો.

  1. A \(2\)
  2. B \(1\)
  3. C \(4\)
  4. D \(3\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(4\)

Step-by-step Solution

Detailed explanation

\(3 x^{4}+4 x^{3}-12 x^{2}+4=0\) So, Let \(f(x)=3 x^{4}+4 x^{3}-12 x^{2}+4\) \(\therefore \mathrm{f}^{\prime}(\mathrm{x})=12 \mathrm{x}\left(\mathrm{x}^{2}+\mathrm{x}-2\right)\) \(=12 \mathrm{x}(\mathrm{x}+2)(\mathrm{x}-1)\)
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