I am stuck on the following question:
I can do the part a rather easily, but the part b i am stuck on.
For now I have shown that I(Wo) = 1/(2piK^2) and 1% of this is 1/(200PiK^2)
I have also deduced that (W-Wo)^2/(Wo)^2 = (0.5/100)^2 because of the statement that the intensity of the frequency more than 0.5% away from Wo is reduced to below 1% of Intensity at Wo. However I am unsure how to proceed any help would be appreciated.