牛頓法計算開根數

package main

import (
    "fmt"
    "math"
)

func Sqrt(x float64) float64 {
    z := float64(1)
    for i:= 1;i<10000; i++{
    z = z - (z *z - x)/(2*z)
    }
    return z
}

func main() {
    for x := float64(1); x < 100; x++ {
    fmt.Println(x, Sqrt(x), math.Sqrt(x))
    }
}