By the way. . .

After learning about speedometers and secants yesterday, I became mathcrazee while driving my way home.

I noted the mileage on my dashboard and the time I left college. Drove home as usual and noted my end mileage and the time I arrived home. Just for the fun of it, I calculated my average rate of speed throughout my journey. 

I subtracted the difference in my beginning and end mileage and divided it by the time I reached home. As a result, I found out that I was driving at 80km/h. 

Ok I know...sounds crazy. But why not apply these stuffs to real life?? Wouldn't it be much easier to remember or understand it this way, instead of blindly memorizing from the book?

Try it yourself. It really works!