Import path for cmplx should be specified

[GoogleCodeExporter]

I flailed a bit when trying to implement and test complex
cube root (exercise on page 46) because I was trying to:

import "cmplx"

This failed with:

# command-line-arguments
.\cbrt.go:13: imported and not used: "cmplx"
.\cbrt.go:25: undefined: cmplx

Because the correct path is "math/cmplx", which it
took me 10 minutes to figure out.  Perhaps the hint about
cmplx.Pow could mention the path for the package.

Original issue reported on code.google.com by James.Sy...@gmail.com on 1 Apr 2012 at 12:48

[GoogleCodeExporter]

Original comment by a...@golang.org on 1 Apr 2012 at 8:37

• Changed state: Started

[GoogleCodeExporter]

This issue was closed by revision d18093f860f1.

Original comment by a...@golang.org on 1 Apr 2012 at 8:46

• Changed state: Fixed