WOLFRAM

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"MathExpression" (Interpreter Type)

Mathematical expression in natural language.

Details

Allowed Forms

  • Any free-form mathematical expression.

Restriction Specifications

Interpretation

  • "MathExpression" yields a representation of the expression in the Wolfram Language.

Examples

Basic Examples  (7)

Interpret mathematical expressions:

Wolfram Language code: Interpreter["MathExpression"]["1.4a+3"]
Wolfram Language code: Interpreter["MathExpression"]["d f(x+2)/dx"]
Wolfram Language code: Interpreter["MathExpression"]["y = b+3"]

The expression is evaluated:

Wolfram Language code: Interpreter["MathExpression"]["1+2+3+4+5"]

Restrict to a list of choices:

Wolfram Language code: Interpreter[Restricted["MathExpression", {{4, 5}}]]["2+2"]

By default, all symbols are allowed. Restrict to a list of allowed symbols:

Wolfram Language code: Interpreter[Restricted["MathExpression", {Plus, Times, Pi}]]["2 pi+2"]
Wolfram Language code: Interpreter[Restricted["MathExpression", {Plus, Times, Pi}]]["2 pi^2"]

By default, new symbols are created in $Context, but a custom context can be specified:

Wolfram Language code: Interpreter[Restricted["MathExpression", All, Automatic, Automatic]]["y + 2"] Context[y]
Wolfram Language code: Interpreter[Restricted["MathExpression", All, Automatic, "mycontext`"]]["k + 2"] Context[k]

Specify contexts for the allowed and output symbols:

Wolfram Language code: mycontext`b = 10; Interpreter[Restricted["MathExpression", Automatic, {"mycontext`", "System`"}, "mycontext`"]]["a+b"] Context[a]

Prevent the creation of any new symbol:

Wolfram Language code: Interpreter[Restricted["MathExpression", Automatic, Automatic, None]]["3+1"]
Wolfram Language code: Interpreter[Restricted["MathExpression", Automatic, Automatic, None]]["z+1"]