A -sinx B -1+cosx C sinx D 0

A 0 B 2 C 2e²+2 D 6/e²

A <img src="https://www.beizhujiaoyu.com/uploads/202208/161191079729351.png" width="59" height="32" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161191079297951.png" width="90" height="34" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161191080239171.png" width="51" height="32" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/161191080741151.png" width="106" height="34" />

A 2/5 B 1/3 C 5/2 D 3

A 2 B 3 C 1/3 D 1/2

A xe^-x2 B -xe^-x2 C 2e^-x2 D -2e^-x2

A <img src="https://www.beizhujiaoyu.com/uploads/202208/161191293599331.png" width="56" height="40" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161191294045231.png" width="81" height="35" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161191294692011.png" width="93" height="34" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/161191295145641.png" width="74" height="34" />

A x²e^-x B -x²e^-x C x²e^x D <img src="https://www.beizhujiaoyu.com/uploads/202208/161191375032951.png" width="40" height="32" />

A <img src="https://www.beizhujiaoyu.com/uploads/202208/161191373248311.png" width="20" height="52" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161191372694971.png" width="20" height="52" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161191372249281.png" width="19" height="52" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/161191371721101.png" width="20" height="52" />

A <img src="https://www.beizhujiaoyu.com/uploads/202208/161191371154881.png" width="80" height="34" /> B <img src="https://www.beizhujiaoyu.com/uploads/202208/161191369217711.png" width="69" height="34" /> C <img src="https://www.beizhujiaoyu.com/uploads/202208/161191368731271.png" width="75" height="34" /> D <img src="https://www.beizhujiaoyu.com/uploads/202208/161191368399711.png" width="83" height="40" />