Question

The given expression  is true if and only if

Solution

Correct option is

 

  

  

  

  

  

as  (x – y)2 can never be negative  x = y                … (i)  

Here, the fraction   is not defined for x + y = 0 

  

SIMILAR QUESTIONS

Q1

 

If , then the greatest value of  is

 

Q2

, then ‘a’ is equal to

Q3
Q4
Q5

 is equal to

Q6

 

The numerical value of  

     

is equal to

Q7

If x1 and x2 are two distinct roots of the equation a  is equal to

Q8
Q9
Q10

The number of integral values of ‘n’ so that sin x (sin x + cos x) = n has at least one solution, is :