- Open the console and create the folder
`chapter03/recipe11`.
- Navigate to the directory.
- Create the
`log.go` file with the following content:

package main import ( "fmt" "math" ) func main() { ln := math.Log(math.E) fmt.Printf("Ln(E) = %.4f\n", ln) log10 := math.Log10(-100) fmt.Printf("Log10(10) = %.4f\n", log10) log2 := math.Log2(2) fmt.Printf("Log2(2) = %.4f\n", log2) log_3_6 := Log(3, 6) fmt.Printf("Log3(6) = %.4f\n", log_3_6) } // Log computes the logarithm of // base > 1 and x greater 0 func Log(base, x float64) float64 { return math.Log(x) / math.Log(base) }

- Execute the code by running
`go run log.go` in the main Terminal.
- You will see the following output: