Function Algebra Unit test
1. (F•g)(x)=3x-9/x+4
2. F^-1 (x) = -3x-4/x-7
3. ( -5 , 0) u ( 0 ,~)
4. D: (-~,2) u (2,~) R: (-~,0) u (0,~)
5. {y|0 _< y< 8}
6. Restricted domain : x _> -4 ;f^-1 (x) = -4+ sqrt x-3
7. The function C because the graphs of A and C are line symmetrical about the Y=X
8. (-~,-3) u (-3,-5/2) u (-5/2,~)
9. ( 4 points )
10. (g • f) (x)= x+3/sqrt x+2
11. (f•g) (x) = x+6 ; [ -2,~)