**GNU Emacs Calc 2.02 Manual**

### 7.8.5 Mathematica Language Mode

The `d M` (`calc-mathematica-language`

) command selects the
conventions of Mathematica, a powerful and popular mathematical tool
from Wolfram Research, Inc. Notable differences in Mathematica mode
are that the names of built-in functions are capitalized, and function
calls use square brackets instead of parentheses. Thus the Calc
formula ``sin(2 x)'` is entered and displayed ``Sin[2 x]'` in
Mathematica mode.

Vectors and matrices use curly braces in Mathematica. Complex numbers
are written ``3 + 4 I'`. The standard special constants in Calc are
written `Pi`

, `E`

, `I`

, `GoldenRatio`

, `EulerGamma`

,
`Infinity`

, `ComplexInfinity`

, and `Indeterminate`

in
Mathematica mode.
Non-decimal numbers are written, e.g., ``16^^7fff'`. Floating-point
numbers in scientific notation are written ``1.23*10.^3'`.
Subscripts use double square brackets: ``a[[i]]'`.