Question

 

 a minimum at x= 1 is the value of a is    

 

Solution

Correct option is

None of these

  

Clearly 2x has its minimum value at x = 1 for x ≥ 1 and that value is 2.

Now if 

  

  

Which is not possible as   

So,  

 

SIMILAR QUESTIONS

Q2

Total number of critical points of (x) = maximum (sin x, cos x) ∀ x Ïµ (–2π, 2π) equal to   

 

Q3
Q4

As an example consider the function (x) = – (–x)5/5, –1 ≤ x ≤ 0. Then at (0, 0) (x) has 

Q6

 then f’(0) is equal to 

Q7

 

  

Local minimum at x = 2, then

 

Q10

Assuming that be petrol burnt in a motor boat varies as the cube of its velocity, the most economical speed when going against a current of ckm/hr is