This paper describe deep mathematics, including differential equations concerned with modeling the draining of tank and the shape of the water coming out the bore hole at the bottom of the tank of water. Recktenwald, G. 2009. Tank Draining Exercise.See http://eet.cecs.pdx.edu/expt/tankdrain/pdf/tankDrainingLabExercise_Fall09.pdf . 16 pp. Accessed 27 March 2023.As part of an experience Engineering in Everyday Things this paper describe deep mathematics, including differential equations concerned …