5- Define the scalar quantity R by R2 = Nuvx"x". a) (5 pts.) Show that ouR = Nuvx" / R. b) (5 pts.) Calculate explicitly ((1/R2), where O = aman. c) (5 pts.) Determine the conditions on the constant 4-vector ksuch that o = eiku.z4 solves the wave equation (p = 0. 5- Define the scalar quantity R by R2 = Nuvx"x". a) (5 pts.) Show that ouR = Nuvx" / R. b) (5 pts.) Calculate explicitly ((1/R2), where O = aman. c) (5 pts.) Determine the conditions on the constant 4-vector ksuch that o = eiku.z4 solves the wave equation (p = 0