calc: Mathematica Language Mode

 
 7.8.8 Mathematica Language Mode
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 The ‘d M’ (‘calc-mathematica-language’) command selects the conventions
 of Mathematica.  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]]’.