x | 1 | 2 | 3 | 4 |
f(x) | 4 | 3 | 2 | 1 |
x | 1 | 2 | 3 | 4 |
g(x) | 3 | 1 | 4 | 2 |
A.2x+1 | B.2x-1 | C.2x-3 | D.2x+7 |
A.(0,0.5),f(0.25) | B.(0,1),f(0.25) |
C.(0.5,1),f(0.75) | D.(0,0.05),f(0.125) |
A.a<-1 | B.a>1 |
C.-1<a<1 | D. |
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