求助!哪位大神可以帮我用python做一下这个题？

yxycsgs

一共两问。

yxycsgs

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