跪求战雪恋全文 百度云(๑•ั็ω•็ั๑) 余污百度云txt
\u6c42\u9648\u5955\u8fc5\u6b4c\u66f2\u767e\u5ea6\u4e91mp3\u534a\u5e74\u524d\u6211\u628a\u5168\u90e8\u9648\u5955\u8fc5\u7684\u6b4c\u66f2\u548c\u4e13\u8f91\u90fd\u4fdd\u5b58\u4e0b\u6765\u4e86\uff0c\u653e\u5728QQ\u90ae\u7bb1\u91cc\u9762\uff0c\u8fd0\u6c14\u597d\uff0c\u73b0\u5728\u4e0d\u7f3a\u6b4c\u66f2\u542c\u4e86
\u4f59\u6c61
http://kty36.cn
x=2, y=1, z=2/\u221a5
x=2.01, y=1.03,
z=2.01*1.03/\u221a(2.01^2+1.03^2)=0.916654385...
,\u25b3Z=0.916654385-2/\u221a5=,0.02222
z'x= y^3/(x^2+y^2)^(3/2) x=2,
y=1, z'x=1/5^(3/2)
z'y=x^3/(x^2+y^2)^(3/2) , x=2,
y=1, z'y=8/5^(3/2)
dz=(dx+8dy)/5^(3/2)=(0.01+0.24)/5^(3/2)=(\u221a5)/100=0.02236
