Difference between revisions of "Formula plotting-special symbols"
From Algebra.Com's Help
Line 20: | Line 20: | ||
int( 1/x^2, dx, 1, infinity ) | int( 1/x^2, dx, 1, infinity ) | ||
int( e^(x^2/2), dx ) | 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 ) |
Revision as of 08:59, 8 July 2005
Click here for examples to see how special symbols are used. Examples are accompanied by source code and are rather self explanatory.
- 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 )