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Name: Provide solution for RD Sharma maths class12 Chapter Maxima and Minima exercise Multiple choice question, question 12.
Uploaded: Wed, 2021-08-18 20:16
Description: Provide solution for RD Sharma maths class12 Chapter Maxima and Minima exercise Multiple choice question, question 12.

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

#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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Provide solution for RD Sharma maths class12 Chapter Maxima and Minima exercise Multiple choice question, question 12.

Answers (1)

Answer: option(c) x =1

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

Given: $f(x)=x^2+x+1$

Solution:

We have,

$f(x)=x^2+x+1$

$f(x)=2x+1$

For maxima and minima $f'(x)=0$

$\Rightarrow 2x+1$

$\Rightarrow x=\frac{-1}{2}\euro [0,1]$

At extreme points,

$f(0)=1>0$

$f(1)=1+1+1=3>0$

So, x = 1 is a local minima.

Posted by

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Provide solution for RD Sharma maths class12 Chapter Maxima and Minima exercise Multiple choice question, question 12.

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