You can solve this equation using the Python square root function:

Recall that the√square root is defined only for positive values

Instead, the square root of a negative number would need to be complex, which is outside the scope of the Python square root function.

it, the square root function must still compute square roots.)

supply it, the square root function must still compute square roots.)

Even 0 is a valid square to pass to the Python square root function:

not supply it, the square root function must still compute square roots.)

does not supply it, the square root function must still compute square roots.)

2) For what values of x is the given function undefined?

For which values of x is the following rational expression defined?

To see a real-world application of the Python square root function, let’s turn to the sport of tennis.

Now, you know both, so go and apply your newfound mastery of the Python square root function!

The following important properties of the square root functions are valid for all positive réal numbers x and y:

The following important properties of the square root functions are valid for all positive real numbers x and y:

We could go a step further and implement our own square root function by using a well-known technique called “Newton’s Method.