3. Generate the plot of spectral energy density vs frequency and spectral energy density vs wavelength for both the Rayleigh-Jeans formula (RJF) and Planck's radiation formula (PRF) from 250nm to 2500 nm using MS Excel or any programming (this range includes the visible light from 400 nm to 700 nm) for 1200 K and 1800 K temperatures. Discuss the resulting plots. Label the peaks (wavelength or frequency) for each plot. a. RJF (x-axis frequency) at T=1200 K and 1800 K b. PRF (x-axis wavelength) at T=1200 K and 1800 K c. RJF and PRF (x-axis frequency) at T =1800 K d. RJF and PRF (x-axis wavelength) at T =1800 K