du/dx=cosxdv/dx=3x^2
dz/dx=e^u*du/dx-2dv/dx
=e^u*cosx-6x^2dz/dx=e^u*du/dx-2dv/dx这个怎么得的啊,我就这里没搞懂。。。dz/dx=dz/du*du/dx+dz/dv*dv/dx因为dz/du=e^u dz/dv=2 du/dx=cosx dv/dx=3x^2所以就得我上面的那个答案啦~~你看错了。。。那个是e^(u-2v)的。。。哦,公式是一样的dz/dx=dz/du*du/dx+dz/dv*dv/dx其中dz/du=e^(u-2v)dz/dv=-2e^(u-2v)du/dx=cosxdv/dx=3x^2奥,看懂了,谢谢啦哈~~~
设Z=e^u-2v,而u=sinx,v=x^3,求dz/dx,
设Z=e^u-2v,而u=sinx,v=x^3,求dz/dx,
数学人气:328 ℃时间:2020-06-22 03:24:32
优质解答
我来回答
类似推荐
猜你喜欢
- 1为什么几乎所有的哺乳动物是恒温,而爬行动物,鱼类是变温的呢?
- 2讲话时不要激动.游览伦敦时,我喜欢坐公共汽车.他们对结婚保密.用英语怎么说?
- 3There is a book and two pens on the table.是遵循就近原则,那问桌子上有什么东西怎么问呢
- 4我读古诗写话题作文用小标题的形式
- 5nothing much you and you know you look better with you hair striaght
- 6阅读短文《空城计》.如果你是司马懿,来到城下,你会怎么想?
- 7将3个小球放入5个编号为1,2,3,4,5的盒子内,5号盒子中至少有一个球的概率是_.
- 8For example,some people waste a lot by _______ dirty water away and throwing rubbish
- 9小华同学骑着自行车在平直公路上以正常速度匀速行驶时的功率约为70W,则他骑车时所受阻力约为( ) A.2000N B.200N C.20N D.2N
- 10simon likes english better than chinese=simon ______english _____chinese.