A.((f°g)•h)(x)=((f•h)°(g•h))(x) |
B.((f•g)°h)(x)=((f°h)•(g°h))(x) |
C.((f°g)°h)(x)=((f°h)°(g°h))(x) |
D.((f•g)•h)(x)=((f•h)•(g•h))(x) |
A.(1)和(20) | B.(9)和(10) | C.(9)和(11) | D.(10)和(11) |
A.f(x)=|x| | B.f(x)=x-|x| |
C.f(x)=x+1 | D.f(x)=-x |
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