data/mathematical/101.mml
<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><mo stretchy="false">|</mo><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo>+</mo><mi>α</mi><mo>,</mo><mi>b</mi><mo>+</mo><mi>β</mi><mo stretchy="false">)</mo><mo>−</mo><mi>f</mi><mo stretchy="false">(</mo><mi>a</mi><mo>,</mo><mi>b</mi><mo stretchy="false">)</mo><mo stretchy="false">|</mo><mo><</mo><mi>ε</mi></mrow><annotation encoding='application/x-tex'>|f(a+\alpha,b+\beta) - f(a,b)| < \epsilon</annotation></semantics></math>