论坛 › Python › 求助!哪位大神可以帮我用python做一下这个题？

yxycsgs 发表于 2016-02-02 09:25

求助!哪位大神可以帮我用python做一下这个题？

一共两问。

yxycsgs 发表于 2016-02-02 10:49

回复 1# yxycsgs


   刚用linux bash 脚本写出：

    t=0
dt=0.1256637
x=1
v=0
a=-1
for (( i=1; i<=250; i=i+1))
do
t=`awk 'BEGIN{printf "%.7f\n",("'"$t"'"+"'"$dt"'")}'`
a=`awk 'BEGIN{printf "%.7f\n",(-1*"'"$x"'")}'`
v=`awk 'BEGIN{printf "%.7f\n",("'"$v"'"+"'"$a"'"*"'"$dt"'")}'`
x=`awk 'BEGIN{printf "%.7f\n",("'"$x"'"+"'"$v"'"*"'"$dt"'")}'`
done
final=`awk 'BEGIN{printf "%.7f\n",(0.5*"'"$v"'"^2+0.5*"'"$x"'"^2)}'`
echo $final

t=0
dt=0.1256637
x=1
v=0
a=-1
for (( i=1; i<=250; i=i+1))
do
t=`awk 'BEGIN{printf "%.7f\n",("'"$t"'"+"'"$dt"'")}'`
v=`awk 'BEGIN{printf "%.7f\n",("'"$v"'"+0.5*"'"$a"'"*"'"$dt"'")}'`
a=`awk 'BEGIN{printf "%.7f\n",(-1*"'"$x"'")}'`
v=`awk 'BEGIN{printf "%.7f\n",("'"$v"'"+0.5*"'"$a"'"*"'"$dt"'")}'`
x=`awk 'BEGIN{printf "%.7f\n",("'"$x"'"+"'"$v"'"*"'"$dt"'"+0.5*"'"$a"'"*"'"$dt"'"*"'"$dt"'")}'`
done
final=`awk 'BEGIN{printf "%.7f\n",(0.5*"'"$v"'"^2+0.5*"'"$x"'"^2)}'`
echo $final

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