设函数f(x,y)可微,又f(0,0)=0,fx’(0,0)=a,fy’(0,0)=b,且φ(t)=f(t,t2)],求φ’(0).

admin2015-07-04  24

问题 设函数f(x,y)可微,又f(0,0)=0,fx’(0,0)=a,fy’(0,0)=b,且φ(t)=f(t,t2)],求φ’(0).

选项

答案在φ(t)=f[t,f(t,t2)]中令u=t,v=f(t,t2),得φ(t)=f(u,v),[*]

解析
转载请注明原文地址:https://kaotiyun.com/show/Uzw4777K
0

最新回复(0)