3.7.7  Export to presentation or content MathML: export_mathml

You can translate the result of an expression into various types of MathML with the export_mathml command.

• export_mathml takes one mandatory argument and one optional argument:
  • expr, an expression.
  • Optionally, format, which can be content or display, specifying what output format should be used.
• export_mathml(expr  ⟨ ,format⟩) returns the result of evaluating expr written in MathML, with a single math block which will be a semantics block.
  • With no second argument, the semantics block will contain both presentation and content MathML.
  • With a second argument of content, the semantics block will only contain the content MathML.
  • With a second argument of display, the semantics block will only contain the presentation MathML.

Examples.

• Input:
  xml_print(export_mathml(a+2*b))
  Output:

  <math xmlns='http://www.w3.org/1998/Math/MathML'>

  <semantics>

  <mrow xref='id5'>

  <mi xref='id1'>a</mi>

  <mo>+</mo>

  <mrow xref='id4'>

  <mn xref='id2'>2</mn>

  <mo>&it;</mo>

  <mi xref='id3'>b</mi>

  </mrow>

  </mrow>

  <annotation-xml encoding='MathML-Content'>

  <apply id='id5'>

  <plus/>

  <ci id='id1'>a</ci>

  <apply id='id4'>

  <times/>

  <cn id='id2' type='integer'>2</cn>

  <ci id='id3'>b</ci>

  </apply>

  </apply>

  </annotation-xml>

  <annotation encoding='Giac'>a+2*b</annotation>

  </semantics>

  </math>

• Input:
  xml_print(export_mathml(a+2*b,content))
  Output:

  <math xmlns='http://www.w3.org/1998/Math/MathML'>

  <apply id='id5'>

  <plus/>

  <ci id='id1'>a</ci>

  <apply id='id4'>

  <times/>

  <cn id='id2' type='integer'>2</cn>

  <ci id='id3'>b</ci>

  </apply>

  </apply>

  </math>

• Input:
  xml_print(export_mathml(a+2*b,display))
  Output:

  <math xmlns='http://www.w3.org/1998/Math/MathML'>

  <mrow>

  <mi>a</mi>

  <mo>+</mo>

  <mrow>

  <mn>2</mn>

  <mo>&it;</mo>

  <mi>b</mi>

  </mrow>

  </mrow>

  </math>

• Input:

  s:=export_mathml(1/(x^2+1),display):;

  xml_print(s)

  Output:

  <math mode='display' xmlns='http://www.w3.org/1998/Math/MathML'>

  <mfrac>

  <mn>1</mn>

  <mrow>

  <msup>

  <mi>x</mi>

  <mn>2</mn>

  </msup>

  <mo>+</mo>

  <mn>1</mn>

  </mrow>

  </mfrac>

  </math>