Maths
Pythagoras's Theorem made easy
Guide to using SI Units
The National Institute of Standards and Technology (NIST) has updated its document detailing the definitions and use of SI units.
Function Grapher
available online here
decibels
A good description of dB is available online from the University of NSW. http://www.animations.physics.unsw.edu.au/jw/dB.htm
The Audio Engineer's surviver guide to the Casio ƒx82 calculator
| using_the_fx82.pdf |
To prove that 2 =1
a = b
a^2 = ab
a^2 - b^2 = ab-b^2
(a-b)(a+b) = b(a-b)
a+b = b
b+b = b
2b = b
2 = 1
a^2 = ab
a^2 - b^2 = ab-b^2
(a-b)(a+b) = b(a-b)
a+b = b
b+b = b
2b = b
2 = 1
Exponential functions
| exponential_functions.pdf |
Trig. functions
| trig_functions.pdf |
| trig_problems.pdf |
| reflected_sound_maths.pdf |