设α1,α2是线性方程组Ax=b的解,则()。
A.α1+α2是Ax=0的解
B.α1-α2是Ax=b的解
C.k1α1+k2α2是Ax=b的解(k1+k2=1)
D.k1α1+k2α2是Ax=0的解(k1+k2=1)
正确答案是C
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