Compare the intensities of maxima and minima in terms of amplitude ratio

Explanation

a. Intensity (maximum or minimum) `prop` Bandwidth
b. Intensity (maximum) `I_("max")prop(a_(1)+a_(2))^(2)`
Intensity (minimum) `I_("minimum")prop(a_(1)-a_(2))^(2)`
`:.(I_("max"))/(I_("min"))=((a_(1)+a_(2))^(2))/((a_(1)-a_(2))^(2))`