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

ધારોકે \(f(x)=4 \cos ^3 x+3 \sqrt{3} \cos ^2 x-10\). અંતરાલ \((0,2 \pi)\) માં \(f\) ના સ્થાનીય મહત્તમ બિંદુઓની સંખ્યા. ............. છે.

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

Answer & Solution

Correct Answer

(B) \(2\)

Step-by-step Solution

Detailed explanation

\(\mathrm{f}(\mathrm{x})=4 \cos ^3(\mathrm{x})+3 \sqrt{3} \cos ^2(\mathrm{x})-10 ; \mathrm{x} \in(0,2 \pi) \) \(\Rightarrow \mathrm{f}^{\prime}(\mathrm{x})=12 \cos ^2 \mathrm{x}[-\sin (\mathrm{x})]+3 \sqrt{3}(2 \cos (\mathrm{x}))[-\sin (\mathrm{x})] \)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app