rations</strong>: <code>+</code>, <code>-</code>, <code>*</code>, <code>/</code></li><li><strong>Parentheses</strong>: <code>(2 + 3) * 4</code></li><li><strong>Exponents</strong>: <code>2^3</code> or <code>2**3</code></li><li><strong>Square root</strong>: <code>sqrt(16)</code></li><li><strong>Absolute value</strong>: <code>abs(-5)</code></li><li><strong>Trigonometric functions</strong>: <code>sin()</code>, <code>cos()</code>, <code>tan()</code></li><li><strong>Logarithms</strong>: <code>log()</code>, <code>