The Values Of a and b for Which All The Extrema Of The Function;  is Positive And The Minimum Is At The Point  are:

Why Kaysons ?

Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

Live Doubt Clearing Session

Ask your doubts live everyday Join our live doubt clearing session conducted by our experts.

National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

SPEAK TO COUNSELLOR ? CLICK HERE

Question

The values of a and b for which all the extrema of the function;  is positive and the minimum is at the point  are:

Solution

Correct option is

For  extrema, f’(x) = 0  

   

  

  

   

So their arises two cases as:

Case I: At a = 3, if function attains minimum and is positive.

   

      

  

Case II: at a = –2, if function attains minimum and is positive. 

  

   

  

   

SIMILAR QUESTIONS

Q1

Let (x) = sin x – x on [0, π/2], find local maximum and local minimum.

Q2

  

Then find the value of ‘a’ for which (x) has local minimum at x = 2.

Q3

  

Discuss maxima and minima.

 

Q4

A cubic (x) vanishes at x = –2 and has relative maximum/minimum x = –1 and   Find the cubic (x). 

Q5

 

Find the maximum and minimum value of  

                      

Q6

Use the function (x) = x1/xx > 0 to determine the bigger of the two numbers.

Q7

 

The maximum value of 

Q8

 then the maximum value of (θ), is:

Q9

The values of ‘K’ for which the point of minimum of the function f (x) = 1 + K2x – x3 satisfy the inequality  belongs to:

Q10

 be the differential equation of a curve and let P be the point of maxima then number of tangents which can be drawn from P to x2 – y2a2 is/are: