2的倒差数是1/1-2=-1,-1的倒差数是1/1+1=1/2.已知a1=1/3,a2是a1的倒差数,a2=( );a3
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3个回答

a1 = 1/3

a2 = 1/(1-1/3) = 3/2

a3 = 1/(1-3/2) = - 2

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