Just before separation of the lunar module, the Apollo 17 command module was in the luna...

Just before separation of the lunar module, the Apollo 17 command module was in the lunar orbit shown in the figure. Determine the spacecraft speeds at points P and A, which are called perilune and apolune, respectively. Later in the mission, with the lunar module on the surface of the moon, the orbit of the command module was to be circularized. Determine the speed increment Δv required

if circularization is to be performed at A.