//Example 16.10
//Initial amplitude of waves = X
//Amplitude of resulting wave = 2X
//Intensity is proportional to amplitude^2
I=1;//Initial intensity (W/m^2)
I_prime=4*I;//Intensity of resulting wave after derivation (W/m^2)
printf('Intensity of resulting wave = %0.2f W/m^2',I_prime)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest