设向量组α₁，α₂，α₃，α₄线性无关，则下列向量组线性无关的是（）．

A 不连续 B 连续但不可导 C 可导但导数不连续 D 导数连续

A P>N>M. B N>P>M. C N>M>P. D P>M>N.

A 取得极小值<img src="https://www.beizhujiaoyu.com/uploads/202208/163140740271271.png" width="29" height="52" /> B 取得极大值<img src="https://www.beizhujiaoyu.com/uploads/202208/163140740758321.png" width="29" height="52" /> C 取得极大值e D 不取得极值

A (A+B)～(C+D). B <img width="175" height="44" src="https://www.beizhujiaoyu.com/uploads/202208/20210924225423_0566.jpg" /> C AB～CD. D <img width="175" height="44" src="https://www.beizhujiaoyu.com/uploads/202208/20210924225423_7129.jpg" />

A p=1，q=1 B p=1，q=2 C p=1，q=0 D p=0，q=2

A P(A+B|<img width="24" height="44" src="https://www.beizhujiaoyu.com/uploads/202208/20211020153035_3999.gif" />)=P(A|<img width="24" height="44" src="https://www.beizhujiaoyu.com/uploads/202208/20211020153035_3999.gif" />)+P(B|<img width="24" height="44" src="https://www.beizhujiaoyu.com/uploads/202208/20211020153035_3999.gif" />) B P(AC+BC)=P(AC)+P(BC) C P(A+B)=P(A|C)+P(B|C) D P(C)=P(A)P(C|A)+P(B)P(C|A)

A ρ_UV=0 B |ρ_UV|=1 C 0<ρ_UV<l D -1<ρ_UV<0<p> </p>

A <img width="150" height="46" src="https://www.beizhujiaoyu.com/uploads/202208/20210924231559_3202.jpg" /> B <img width="178" height="46" src="https://www.beizhujiaoyu.com/uploads/202208/20210924231600_4764.jpg" /> C <img width="80" height="46" src="https://www.beizhujiaoyu.com/uploads/202208/20210924231601_5545.jpg" /> D <img width="108" height="46" src="https://www.beizhujiaoyu.com/uploads/202208/20210924231602_6193.jpg" />

A 与α无关 B 随α的增加而增加 C 随α的增大而减少 D 与α有关但与α的增减性无关