The Law of Cosines is useful in geometry and trigonometry when we solve triangles (to find their side lengths and angle measures). So, what is the Law of Cosines?  The Law of Cosines relates...

The Law of Sines is useful in geometry and trigonometry when we solve triangles (to find their sides and angles). So, what is the law of sines?  The Law of Sines relates the sides &...

Velocity is not just a theoretical idea - it is a very a useful concept when applied to many fields, from physics to weather (and much more!)  Having a good grasp of velocity and how it is used...

Exponential functions come up often in algebra and calculus.  It is one thing to make a table or graph given the formula for an exponential function, but working backwards is another...

Initial value problems come up often in calculus, physics, and other subjects.  You can solve some of them with straightforward antiderivatives, while others will require you to solve a...

Nonlinear equations appear often in algebra, calculus, and physics (for example, when solving problems that involve gravity or acceleration).  Since they are pretty common, it helps to know...