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last edited 5 years ago by test1 |
Edit detail for FriCAS Problems revision 3 of 3
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Editor: test1
Time: 2019/08/02 14:06:33 GMT+0 |
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changed: - Expressions like 'sin(x)' appear unevaluated until a value is - substituted for x but expressions like 'max(x,y)' return 'y'! - Why is that? There is difference between functions and expressions: - programming linguage functions produce values, expressions are values There is difference between functions and expressions: programming language functions produce values, expressions are values changed: - value producing function. 'max' used order on expression to pick function. 'max' used order on expression to pick
- Unevaluated Expressions
There is difference between functions and expressions: programming language functions produce values, expressions are values which represent symbolic information. In the past
maxwas ordinary function.maxused order on expression to pick "bigger" argument, quite unlike expected symbolic behaviour. Now in FriCAS expressions are no longer ordered and oldmaxdefinition does not work, freeing the name so that we can give it symbolic meaning. - Definite Integration
- Dynamic Function Domains:
functions with signatures like (a,b,B(a))->(C(a,b)) - GCD in EXPR
- indexed variables
- List To Matrix
- Manipulating Expressions
- Mutual Recursion:
Odd(0)=false, Odd(n)=Even(n-1) Even(0)=true, Even(n)=Odd(n-1) - Numerical Integration
- numerical linear algebra
- Pattern Matching
- Piecewise Functions
- Polynomial Coefficients
- simplify exponents
- series
- Symbolic Integration
- Computing with Vectors
- Rules for simplifying Expressions
- Graphics on MathAction
- changing how expressions are displayed