- #1
sara_87
- 763
- 0
Good evening guys, i have two stupid questions that I'm stuck on and i would be grateful if anyone could help
Question 1:
f(x)= x+1 g(x)=x^2
the domain in each case is the interval [-1,1] and belongs to the set of real numbers then find the range of:
(fog)(x)
My Answer:
i found (fog) to be x^2 +1 then i put in -1,0 and 1 to get the range
or should i do (fog)*(x) which would make it x^3 + x
Question 2:
determine which of the following questions are equal:
f:{1} -> N (the set N) and g:R-> R (the set R) be functions given by
f(x)=x-1 and g(x)=0
My Answer
f(x) not equal g(x)
because 0 doesn't belong to the set N ?
(i feel so dum asking these questions!)
Question 1:
f(x)= x+1 g(x)=x^2
the domain in each case is the interval [-1,1] and belongs to the set of real numbers then find the range of:
(fog)(x)
My Answer:
i found (fog) to be x^2 +1 then i put in -1,0 and 1 to get the range
or should i do (fog)*(x) which would make it x^3 + x
Question 2:
determine which of the following questions are equal:
f:{1} -> N (the set N) and g:R-> R (the set R) be functions given by
f(x)=x-1 and g(x)=0
My Answer
f(x) not equal g(x)
because 0 doesn't belong to the set N ?
(i feel so dum asking these questions!)