//Example 26.2
d_i=2*10^-2;//Image distance (m)
d_o_distant=%inf;//Object distance for distant vision (m)
d_o_close=25*10^-2;//Object distance for close vision (m)
P_distant=1/d_o_distant+1/d_i;//Power for distant vision (D)
printf('Power = %0.1f D (distant vision)',P_distant)
P_close=1/d_o_close+1/d_i;//Power for closest vision (D)
printf('\nPower = %0.1f D (close vision)',P_close)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest