Online Mathematical Calculation Functions

So far I have been setting up a list to be created, you are welcome to suggest more by replying to this thread.

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Features to add to PhysicaFX

--- Mathematics

Triangle Areas - Heron's Formula, Sine

Triangle Sides - Using Law of Sine and Cosine

Circle - radius, diameter, area, circumference, cylinder volume, surface area.

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http://physics.sviesoft.com/mathemat.../triangle.html

Thought you might like to know that it's Hero's Formula, not Heron's.

Make a Solve() function that lest you put in an equation, and it solves the variable in it.

My calculator has that, but it can't solve (X^X)^X=3 without causing an error :D

Summation and Product functions, Derivatives and simple Integrals, Matrix functions, Solve() or Isolate() using systems of equations while attempting to eliminate certain variables, Limits, Recursive sequences, ....... thats all i can think of for now.

Oh and if it doesn't already have them: vector funtions.

Quote:

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Originally posted by alkatran
My calculator has that, but it can't solve (X^X)^X=3 without causing an error :D

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My HP-15C solves this one.

Quote:

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Originally posted by A$$Bandit
Thought you might like to know that it's Hero's Formula, not Heron's.

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most ppl here call it Heron's formula instead of Hero's formula.

program to find the difference quotient of an equation.

something like this

VB Code:

f(x) = 3x+2
 
f(x+h) = 3(x+h) + 2 - (3x+2)/h
          = 3x+3h+2-3x-2/h
          = 3h/h
          = 3
 
so the difference quotient of f(x) = 3x+2 is 3

or something like that