Here are some examples of functions you can plot:

• f(x) = x**2 (Quadratic Function)
• f(x) = Math.sin(x) (Sine Function)
• f(x) = Math.log(x) (Natural Logarithm)
• f(x) = x**3 + 2*x - 5 (Cubic Function)
• f(x) = Math.exp(x) (Exponential Function)

Make sure to use JavaScript syntax for the functions. For example:

f(x) = x**2

Refer to JavaScript Math Reference for more information.