View source for Formula plotting-special symbols

{{Formula}}

Click [http://www.algebra.com/services/rendering/regression.mpl?f=special.txt here for examples] to see how special symbols are used. Examples are accompanied by source code and are rather self explanatory.

Special symbols refer to math elements that are displayed by locating formula elements in peculiar ways. Regular functions like sin(x) are not mentioned here. Only things that are plotted in a special ways, like integrals and logarithms, are discussed here.

* '''Sums''' are entered using a "sum" function
  sum( from, to, expression )   <-- sum with limits
  sum( expression )             <-- sum without limits

Example: 

  e=sum( i=0, N, 1/i! )
  sum( 1/i ) = infinity

* '''Integrals''' are similar to sums and are entered using the 'int' symbol
  int( expression, dx, from, to )   <- integral with limits
  int( expression, dx )             <- integral without limits (undetermined)

Example:

  int( 1/x^2, dx, 1, infinity )
  int( e^(x^2/2), dx )

* '''greek letters''' are entered using their common English names. Lowercase names mean lowercase greek letters, uppercase names mean uppercase greek letters. Example: epsilon, EPSILON, pi, PI. See examples link in the first paragraph.

* '''logarithms''' are entered using either base and power, or just power; Examples:

  log( 2, 8 ) = 3
  log( xy ) = log( x ) + log( y )

* '''square roots''' are entered using 'sqrt'. Example

  sqrt( b^2-4ac )

* '''matrices''' are discussed on [[Formula plotting-matrices|this page]].