Let `1 < m < 3.` In a triangle `ABC` , if `2b=(m+1)` a & `cosA=1/2sqrt(((m-1)(m+3))/m)` prove that the are two values to the third side, one of which is m times the other.

Let A = [-1, 1]. Which of the following functions on A is not a bijection?

Let A =[[1,2,2],[2,1,2],[2,2,1]] , then

Let A = { 1,3,5 } . then the number of equivalence relations in A containing (1,3) is ?

Let N_1=2^55+1 and N_2=165 . Then

Let f (x) be invertible function and let f ^(-1) (x) be is inverse. Let equation f (f ^(-1) (x)) =f ^(-1)(x) has two real roots alpha and beta (with in domain of f(x)), then :

Let A = {1, 2, 3}. Which of the following is not an equivalence relation on A ?