There are three equivalent ways to write the energy stored inside a capacitor. Which formula is not one of them?
U_(C)=(1)/(2)QC^(2)
U_(C)=(1)/(2)C(\Delta V_(C))^(2)
U_(C)=(1)/(2)(Q^(2))/(C)
U_(C)=(1)/(2)Q\Delta V_(C)