A.x+4y+3=0 | B.x+4y-9=0 |
C.4x-y+3=0 | D.4x-y-2=0 |
A.f(x)=-x(1-x) | B.f(x)=x(1+x) |
C.f(x)=-x(1+x) | D.f(x)=x(1-x) |
A.(3,4) | B.(2,3) |
C.(1,2) | D.(0,1) |
t | 0 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 |
y | 5.0 | 7.5 | 5.0 | 2.5 | 5.0 | 7.5 | 5.0 | 2.5 | 5.0 |
A.①②④ | B.②③④ | C.①④⑤ | D.①②⑤ |
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