(x+1)3次方+(x-2)八次方=a0+a1(x-1)+a2(x-1)²+a3(x-1)3方.求a6
问题描述:
(x+1)3次方+(x-2)八次方=a0+a1(x-1)+a2(x-1)²+a3(x-1)3方.求a6
答
C(8,6)*(-2)^2=112
-8*C(7,6)*(-1)=56
C(8,6)*(-1)^2=28
a6=112-56-28
=28
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