SingleVariableFunction class

A callable class built from a string representation of a numerical function.

Two named arguments are required: fromExpression and withVariable.

Example

import "package:function_tree/function_tree.dart";

void main() {
  final expression = "a^2 + 3*a + 5",
      f = SingleVariableFunction(
        fromExpression: expression,
        withVariable: "a",
      ),
      x = 2.0,
      result = f(x);
  print("f($x) = $result");
}

Result

f(2.0) = 15.0

Inheritance

• Object
• FunctionTree
• SingleVariableFunction

Constructors

SingleVariableFunction({required String fromExpression, String withVariable = "x"})

SingleVariableFunction.fromNode({required Node node, String withVariable = "x"})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

representation → String

A tree structure representation.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

tex → String

A TeX expression representing the tree.

no setter, override

tree → Node

A callable tree representing the components of the function.

no setter, override

variable ↔ String

getter/setter pair

Methods

call(num x) → num

derivative(String variableName) → SingleVariableFunction

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited