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Name: Please solve RD Sharma class 12 Chapter Maxima and Minima exercise Multiple choice question, question 30 maths textbook solution.
Uploaded: Thu, 2021-08-19 07:57
Description: Please solve RD Sharma class 12 Chapter Maxima and Minima exercise Multiple choice question, question 30 maths textbook solution.

#RD Sharma Vol. 1 Class 12
#CBSE 12 Class
#School
#Maxima and Minima
#R.D. Sharma
#Maths

#1.3
#9.12
#Fill in the blanks
#Very Short Answer type
#Multiple Choice Questions (MCQs)
#17.1
#17.2
#17.3
#17.4
#17.5
#Case Study Based Questions (CSBQ)

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Please solve RD Sharma class 12 Chapter Maxima and Minima exercise Multiple choice question, question 30 maths textbook solution.

Answers (1)

Answer: option(d) f (x) is an increasing function.

Hint: For local maxima or minima, we must have $f'(x)=0$ .

Given: $f(x)=2x+\cos x$

Solution:

We have,

$f(x)=2x+\cos x$

$\Rightarrow f'x=2-\sin x>0$

Hence, f (x) is an increasing function.

Posted by

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Please solve RD Sharma class 12 Chapter Maxima and Minima exercise Multiple choice question, question 30 maths textbook solution.

Answers (1)

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