Let u= f (x + y,x,y,2), in which z = z (x,y) be determined by xxx and - 道道学堂问答

Let u= f (x + y,x,y,2), in which z = z (x,y) be determined by xxx and

匿名用户最后更新于 2021-10-25 13:20 数学类Mathematics

Letu=f(x+y,x,y,2) in which=z(x,y)be determined bydt and+a continuous partial derivatives, can guide p and p(y+z)-p(x+)-1 0, calculate

已邀请:

1 回答

登录查看答案