//Example 8
//chapter 42
//clc()
o=9//in c
f=24//in cm
x=(1/f)-(1/o)
disp("x=1/i in cm=")
disp(x)
i=1/x
disp("i in cm=")
disp(i)
disp("lateral magnification =")
m=-(i/o)
disp(m)