The number of solutions of the matrix equation `X^2=[[1, 1],[ 2, 3]]` is (A) more than 2 (B) `2` (C) `0` (D) `1`

The number of solutions of the equation cot(sin x+3)=1, in [0,3pi] is 0 (b) 1 (c) 4 (d) 2

The number solution of the equation sgn(x^2)=|x-2| is 1 (b) 0 (c) 2 (d) 3

The number solution of the equation sgn(x^2)=|x-2| is 1 (b) 0 (c) 2 (d) 3

The number of solutions of the equation |cosx-sinx|=2cosx in [0,2pi] is (A) 1 (B) 2 (C) 3 (D) 4

The number of solution of the equation 2[x] = x + 1 + {x} is/are a. 1 b. 2 c. 0 d. 4

The number of real solutions of the equation |x^(2)|-3|x|+2=0 is (a) 3 (b) 4 (c) 1 (d) 3.

The number of real solutions of the equation -x^2+x-1=sin^4x is (A) 1 (B) 2 (C) 0 (D) 4

If x epsilon R, then the number of real solutions of the equation 3^x+3^-x=log_10 99 is (A) 0 (B) 1 (C) 2 (D) more than 2

The number of real solutions of the equation x^(2)+5|x|+4=0 are A) 4 B) 2 C) 1 D) 0

The number of solution of the equation 2sin^(-1)((2x)/(1+x^(2)))-pi x^(3)=0 is equal to