If a is any real number, the number of roots of cot x - tan x = a in the first quadrant is

If a is any real number,the number of roots of cotx-tan x=a in the first quadrant is (are).2 (b) 0 (c) 1 (d) none of these

If a is any real number, the number of roots of cotx-t a nx=a in the first quadrant is (are). 2 (b) 0 (c) 1 (d) none of these

The number of real roots of |x^(2)| - 5|x| + 6 = 0 is

The number of real roots of |x^(2)| - 5|x| + 6 = 0 is

If a, b, c are positive real numbers, then the number of real roots of the equation a x^(2)+b|x|+c=0 is

For any real number x, the value of int_(0)^(x) [x]dx , is

The number of real root of the equal x^(3) -6x +9 = 0 is :

The number of real root of the equal x^(3) -6x +9 = 0 is :

The number of real roots of |x|^(2)-7|x|+12=0 is :