IF THE STATEMENT IS CORRECT WRITE “ TRUE “ AND IF IT IS INCORRECT WRITE “FALSE
1. sgn(-x)=-sgn(x),for all x∈R.
2. The range of the relation R= {(x, y): y 3. The power function does not satisfy the condition f (xy) = f(x).f(y).
4. The domain of: f(x) = √(1-√(x-3)) is [- 4, - 3] ∩ [3, 4].
5. The solution set of; Sgn (x^3 + 125) = 0 is {– 5}.
6. Let f(x) = 3x - 2 and g(x) = 5x+1 then the value of: (fogof) (2) is 61.
7. f is one to one if and only if f a function.
8. The solution set of :(1+ 1/x)/(1-1/x)= 1/(x-1) is {0}.