Why might a profitable motel shut down in the long run if the land on which it is located becomes extremely valuable due to surrounding economic development?   A profitable motel may shut down in the long run if the …

Why might a profitable motel shut down in the long run if the land on which it is located becomes extremely valuable Read more »

A heart pacemaker consists of a switch, a battery of constant voltage E0 , a capacitor with constant capacitance C, and the heart as a resistor with constant resistance R. When the switch is closed, the capacitor charges; when the switch …

A heart pacemaker consists of a switch, a battery of constant voltage E0 , a capacitor with constant capacitance C Read more »

Explain why it is always possible to express any homogeneous D.E.  in the form  you might start by proving that:   Any homogeneous O.D.E can be written as   because when identifying our functions of F(x,y) such that:  because our M corresponds to y …

Explain why it is always possible to express any homogeneous D.E. Read more »

Suppose P(x) is continuous on some interval I and a is a number in I. What can be said about the solution of the initial-value problem ? As always, first,  I would like to write down the given data. Sometimes, we have …

Suppose P(x) is continuous on some interval I and a is a number in I. What can be said about the solution of the initial-value problem  Read more »

Suppose water is leaking from a tank through a circular hole of area  at its bottom. When water leaks through a hole, friction and contraction of the stream near the hole reduce the volume of water leaving the tank per second …

Suppose water is leaking from a tank through a circular hole of area  at its bottom. Read more »

Find a function whose second derivative is y” = 12x – 2 at each point (x,y) on its graph and y = -x+5 is tangent to the graph at the point corresponding to x = 1. This problem has multiple …

Find a function whose second derivative is y” = 12x – 2 at each point (x,y) on its graph and y = -x+5 Read more »