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### Continuous compounding and e : Introduction to interest

##### By: Sal Khan

What interest is. Simple versus compound interest.

An look at exponential and logarithmic functions including many of their properties and graphs. This tutorial introduces us to one of the derivations (from finance and continuously compounding interest) of the irrational number 'e' which is roughly 2. 71.

### Solving systems of equations for the king : Practice thinking abou...

##### By: Sal Khan, Monterey Institute for Technology and Education

Going through a few examples on the Khan Academy practice exercise

What happens when we have many variables but also many constraints.

### Unit circle definition of trigonometric functions : Example: Unit ...

##### By: Sal Khan, Monterey Institute for Technology and Education

Unit circle definition to calculate sin and cos of multiple angles

Videos and exercises on trigonometry. Watch the Geometry playlist first if you have trouble understanding the topics covered here.

### Analyzing functions : Connection between even and odd numbers and ...

##### By: Sal Khan

A possible reason why even functions are called even and odd functions are called odd

Revisiting what a function is and how we can define and visualize one.

### Trigonometric identities : Trig identies part 3 (part 5 if you wat...

##### By: Sal Khan

Continuation of the playing around with trig identities

If you're starting to sense that there may be more to trig functions than meet the eye, you are sensing right. In this tutorial you'll discover exciting and beautiful and elegant and hilarious relationships between our favorite trig functions (and maybe a

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