CHOOSE THE ONE THAT IS BEST ANSWER FOR EACH OF THE FOLLOWING
2. Which of the following pair of functions are not inverse to each other?
A. f(x)=√2x and g(x)=2x^2 B. f(x)=log_3〖(2x)〗 And g(x)=1/2(3^x)
C. f(x)= x^(2/3) and g(x)= x^(3/2)D. f(x)= 3+√x and g(x)= (x-3)^2
3. If f: R→B defined by f(x)=x^2+8x+10 is onto, then set B is given by:
A. (-4,∞) B. (0,4) C. [4,∞) D. [-6,∞)
4. Which one of the following is power function?
A. f(x)=√(1/x)B. f(x)=2^x C.f(x)=3x^2+4 D. f(x)=3^(1/2 x+1)
5. Which one of the following intervals is the domain of h(x)= (x^2+ 6x + 5)/(x^2-25)?
A. (-5,5)B. (-∞,-5)∪(-5,5)∪(5,∞) C. (-∞,-5)∪(5,∞) D.(–∞,∞)
6. Which of the following functions is not one-to-one?
A)f(x)=x3-1 B) g(x) = 6 C) h(x)=x5 D) k(x)=2x-3
