Archive for the ‘Mathematics’ Category

New Riemann Sums applet

applet for finding area under curve
Here’s some background on the new Riemann Sums applet I added to IntMath. You can see how we find areas under curves using rectangles.

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Arc length of a spiral around a paraboloid

paraboloid spiral
What is the length of a spiral around a paraboloid? This is an interesting application of integral calculus, involving an environmentally friendly cooker design.

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From brain injury to math genius: Jason Padgett

Padgett image
Jason Padgett was attacked and savagely beaten. He had severe concussion, but an amazing new ability to “see the world through the lens of geometry”.

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Google uses integration to speed up the Web

The page speed index score is based on calculus
Google tries hard to provide super-fast Web pages, and uses calculus in the process.

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Friday math movie: 5 Quick Math Tricks for Filmmakers

Film maker math tricks
This short video from Indy Mogul discusses some of the math involved in making videos.

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Friday math movie: Falling in love with primes

Monster prime numbers
Comedian Adam Spencer gives us the lowdown on finding monster prime numbers.

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Pulleys interactive applet: math background

Updated pulley math interactive applet
Here’s some math background behind the recently updated pulley applet.

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Range hood curved sides problem

range hood
A manufactures of range hoods with curved sides wants to know what shape to cut the sheets.

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New z-Table interactive graph

z-curve interactive
Investigate the meaning of the z-table using this interactive graph.

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Friday math movie: Complex numbers in math class

Complex number lesson
This is a very creative way to present a lesson – funny, too.

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