Derek Bassett derekbassett

## gist:c4cb100b8ec8555682d67b2338f2c669
/*
A Tour of Go: page 44
http://tour.golang.org/#44

Exercise: Loops and Functions

As a simple way to play with functions and loops, implement the square root function using Newton's method.

In this case, Newton's method is to approximate Sqrt(x) by picking a starting point z and then repeating: z - (z*z - x) / (2 * z)
	/*
	A Tour of Go: page 44
	http://tour.golang.org/#44

	Exercise: Loops and Functions

	As a simple way to play with functions and loops, implement the square root function using Newton's method.

	In this case, Newton's method is to approximate Sqrt(x) by picking a starting point z and then repeating: z - (zz - x) / (2 z)