A <img src="https://www.beizhujiaoyu.com/uploads/202208/16119100868071.png" width="59" height="46" />  B <img src="https://www.beizhujiaoyu.com/uploads/202208/161191009125921.png" width="59" height="46" />  C <img src="https://www.beizhujiaoyu.com/uploads/202208/161191009673521.png" width="59" height="45" />  D 0

A 8π B 4π C 2π D （1/2）π

A 0 B 2/3 C -2/3 D <img src="https://www.beizhujiaoyu.com/uploads/202208/161191366524321.png" width="85" height="42" />

A <img src="https://www.beizhujiaoyu.com/uploads/202208/161197297919281.png" width="127" height="34" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161197299189651.png" width="140" height="35" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161197300082291.png" width="139" height="35" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/161197300759621.png" width="139" height="34" />

A 充分且必要条件 B 必要但非充分条件 C 充分但非必要条件 D 既不充分也不必要条件

A <img src="https://www.beizhujiaoyu.com/uploads/202208/161197470986091.png" width="195" height="44" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161197471480371.png" width="200" height="43" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161197472597371.png" width="188" height="44" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/161197473192461.png" width="162" height="38" />

A -1 B 1 C 0 D 2

A 1/4(1-e^-2) B 4(1-e²) C 4e² D 4(1-e^-2)