A <img src="https://www.beizhujiaoyu.com/uploads/202208/164065556710341.jpg" alt="" width="160" height="40" title="" align="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164065558613121.jpg" alt="" width="160" height="43" title="" align="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164065559661431.jpg" alt="" width="160" height="41" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164065560842591.jpg" alt="" width="160" height="33" title="" align="" />

A A有三个不相等的特征值 B A有三个线性无关的特征向量 C A有三个两两无关的特征向量 D A的不同特征值对应的特征向量正交

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164060561152091.jpg" alt="" width="280" height="34" title="" align="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164060562053371.jpg" alt="" width="280" height="34" title="" align="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/1640605629191.jpg" alt="" width="400" height="33" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164060563745591.jpg" alt="" width="400" height="33" title="" align="" />

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164059692661271.png" alt="" width="100" height="30" title="" align="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164059693327211.png" alt="" width="100" height="33" title="" align="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164059694166161.png" alt="" width="100" height="31" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164059694818241.png" alt="" width="100" height="29" title="" align="" />

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164068317391541.jpg" alt="" width="240" height="53" title="" align="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164068318240091.jpg" alt="" width="240" height="52" title="" align="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164068361466141.jpg" alt="" width="350" height="58" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164068362545761.jpg" alt="" width="370" height="61" title="" align="" />

A {λ|λ∈R} B {λ|λ∈R，λ≠-1} C {λ|λ∈R，λ≠-1，λ≠-2} D {λ|λ∈R，λ≠-2}

A 1 B 5 C 9 D 12

A <img src="https://www.beizhujiaoyu.com/uploads/202208/164065840129771.jpg" alt="" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/164065841081361.jpg" alt="" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/164065842010531.jpg" alt="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164065842898921.jpg" alt="" />

A 1/4 B 1/2 C <img src="https://www.beizhujiaoyu.com/uploads/202208/164065924920261.jpg" alt="" width="32" height="42" title="" align="" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/164065926182871.jpg" alt="" width="35" height="45" title="" align="" />