4. The sound level measured in watts per square meter; varies in direct proportion to the power of the source and inversely as the square of the distance from the HW6_2021 4 10.013 Emma Homework source, so that is given by y = kPic2, where y is the sound level, P is the source power; a: is the distance from the source, and h is a positive constant. Two beach parties, 100 meters apart, are playing loud music on their portable stereos. The second party's stereo has 64 times as much power as the rst. The music approximates the white noise, so the power from the two sources arriving at a point between them adds, without any concern about whether the sources are in or out of phase. To what point on the line segment between the two parties should you go, if you wish to enjoy as much quiet as possible? Demonstrate that you have found an absolute minimum, not just a local minimum