难得啊
快乐男孩
冬季清晨
新的秘境
冬季的深圳
2023年12月赴深圳公干，夜出觅食。时值隆冬，南国竟温暖如春。和风吹来，颇有置身故园初春之感。恍惚间，突觉自己撸袖挽裤、光脚立于乡间农田；又见明月映照水天之间，秧苗茂盛，摇曳生姿，更兼虫鸣蛙叫环绕四周… …噫，离乡竟已二十余年矣。、
好奇小子
小城松潘
sympy求偏导
In [1]: from sympy import symbols, log, diff
In [2]: a,b,c,v,t = symbols("a b c v t",real=True)
In [3]: u=a*log((b/a)*t+1)+c+v*t
In [4]: print(diff(u,t))
b/(1 + b*t/a) + vcentos7 支持exfat
https://linuxize.com/post/how-to-mount-an-exfat-drive-on-centos-7/
sudo yum install epel-release
sudo rpm -v --import http://li.nux.ro/download/nux/RPM-GPG-KEY-nux.ro
sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-5.el7.nux.noarch.rpm
sudo yum install exfat-utils fuse-exfat
sudo mount -t exfat /dev/xxxx /mnt/xxxx大理风光
