设㏒3(2)=a,则㏒2(9)A.1/a B2/a C3/2 *a^2 D2/3*a^2

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设㏒3(2)=a,则㏒2(9)A.1/a B2/a C3/2 *a^2 D2/3*a^2
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设㏒3(2)=a,则㏒2(9)A.1/a B2/a C3/2 *a^2 D2/3*a^2
设㏒3(2)=a,则㏒2(9)
A.1/a B2/a C3/2 *a^2 D2/3*a^2

设㏒3(2)=a,则㏒2(9)A.1/a B2/a C3/2 *a^2 D2/3*a^2
B,
㏒3(2)=a,㏒2(3)=1/a,㏒2(9)=2㏒2(3)=2/a