{2}".format(datetime.now(),ip,port)) server.listen(5) while True: cscok,addr = server.accept() diff --git a/dist/mysqltools-python-2.19.03.23.tar.gz b/dist/mysqltools-python-2.19.03.23.tar.gz new file mode 100644 index 0000000000000000000000000000000000000000..7afa1e2f2f11c6914609bd81...
xyz是相等的 x=y=z=1 x=y=z=0
解:原式=⎛ ⎛⎜ ⎜⎝⎞⎟⎠x2y-z23÷⎛ ⎛⎜ ⎜⎝⎞⎟⎠-x3z2=x6y3-z6÷x6z2=x6y3-z6×z2x6=y3-z4=-y3z4.故答案为: -y3z4. 通过观察此题,可以先把括号里面的每个分式进行乘方运算,然后再把除法变为乘法,能约分的进行约分运算,最后分子相乘作分子,分母相乘作分...
3x2y-⎡⎢⎢⎣⎤⎥⎥⎦2x2y-⎛ ⎜ ⎜ ⎝⎞⎟⎟⎠2xyz-x2z+4⎛ ⎜ ⎝⎞⎟⎠x2z- 12xyz =3x2y-⎡⎢⎢⎣⎤⎥⎥⎦2x2y-2xyz+x2z+4x2z-2xyz =3x2y-2x2y+2xyz-x2z+4x2z-2xyz =x2y-3x2z =x2⎛ ⎜ ⎝⎞⎟⎠y-3z 当x...
解：x=2y=3z，可得：y=1/2x，z=1/3x；x：y：z=x：1/2x:1/3x=1:1/2:1/3=6:3:2
pXZ7GKXd4CAz4pir3ZtPN2Y8mxcQyA6Rkmc0KjHaSz4E3EabIUrYbG6q/LwisMpoNLqQSu1JYSVo Z3sBQQU3eEucQUyDPFJ34/nJwAsIHjQJZ7+h03xpZVgyAwcMQSHZCwhUsGQQljL7ENo+o5IQFN7g yHSMbHulZi3SGImUzZLcFGxBUHgBgQkUmmza4kvtfjBhFDMVPBAzCb35YTHZD1DChYlaSEJGYQZ4 +KAkAfdZgCrD3++AM5PvNn0SK0UG8wgKdzRyd6XH...
利用不等式 (a1ba+a2b2+a3b3)^2
ac8lDxPNX5uBkTnEoqOnA38rehWDcS+kt3Q1z07fB9KW2EGdTCVYgvEnlP1kLuEgqnDOm/KBFvPW 6hoTQLroa9IAlLMmTsUDZ9NJ/e1RijzDvqIxNrw69FnT+zW675g8dZAheeuWzP7AdRkbIlLMNU5p 0BLDmRmjxazlcopJYPdHbWhsQwGssFWSRPxWwZHdS+y6gUChgoUkqG37P5OT50UhyPuk2yNFL8CT SdspaP6f4Y+oN0rzn8K8fmwxjyjmORlMGIKCTkxCzh5...
pool/main/c/corosync/libcfg6_2.3.3-1ubuntu1_amd64.deb _4HsW_VnZlxh7GPOX3z8dw=Debian:pool/main/c/corosync/libcmap4_2.3.3-1ubuntu1_amd64.deb AjsttIcU6tdjtI6Fzctq1g=Debian:pool/main/c/corosync/libcorosync-common4_2.3.3-1ubuntu1_amd64.deb PUEduKEsbGIu86vsVTyoWg=Debian:pool/main/...
解析:对方程两边关于x求偏导数,得z(∂z)/(∂x)=e^(2x-3z)(2-3(∂z)/(∂x)) 解得(∂z)/(∂x)=(2e^(2x-3x))/(1+3e^(2x-3x)) 同理,对方程两边关于y求偏导数,得(∂z)/(∂y)=e^(2x-3x)(-3(∂z)/(∂y))+2 )+2,(∂z)/(∂y)=2/(1+3e^(2x...