data/mathematical/294.mml
<math xmlns='http://www.w3.org/1998/Math/MathML' display='inline'><semantics><mrow><mi>x</mi><mo>=</mo><msub><mi>log</mi> <mn>2</mn></msub><mi>n</mi><mspace width="1em"/><mo>⇔</mo><mspace width="1em"/><msup><mn>2</mn> <mi>x</mi></msup><mo>=</mo><mi>n</mi></mrow><annotation encoding='application/x-tex'>x=\log_2 n \quad\Longleftrightarrow\quad 2^x=n</annotation></semantics></math>