Class Expr`Abstract`

Abstract base class for expressions
No Division. Use Mul(a, pow(b, -1))
No Subtraction. Use Sum(a, negate(b))

Hierarchy (view full)

Expr
- Const
- Variable
- Sum
- Mul
- Pow
- Sin
- Cos

Index

Constructors

Accessors

Methods

check_vars diff eval simplify toString

Constructors

constructor

new Expr(): Expr
Returns Expr

Accessors

`Abstract` vars

get vars(): Set<Variable>
Get a set of all variables used by this expression

Returns Set<Variable>
- Defined in sym.ts:11

Methods

check_vars

check_vars(vars): void
Check if a map of variables contains all variables used in this expression
Parameters
- vars: VarMap
Returns void
- Defined in sym.ts:27

`Abstract` diff

diff(d): undefined | Expr
Differentiate the expression with respect to a variable
Parameters
- d: Variable
Returns undefined | Expr
- Defined in sym.ts:19

`Abstract` eval

eval(vars, checkVars): undefined | number
Evaluate expression
Parameters
- vars: VarMap
  A map of variables to numbers to use while evaluating expressions
- checkVars: boolean
  Weather to check if all needed variables are given or not
Returns undefined | number
- Defined in sym.ts:17

`Abstract` simplify

simplify(): Expr
Simplify the expression. Can't do complete simplification
Note: Simplification may remove expressions with no effect

Returns Expr
- Defined in sym.ts:23

`Abstract` toString

toString(): string
Returns string
- Defined in sym.ts:24

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