Go language advanced Exercise:complex cube roots

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Let's explore Go s built-in support for complex numbers via the and complex64 complex128 types. For cube roots, Newton's method amounts to repeating:

Find the cube root of 2, just to make sure the algorithm works. There is a Pow function in the package math/cmplx .

package main

Import (
"FMT"
"math"
)

Func CBRT (x complex128) complex128 {
Z: = x
For I: = 0; I < 10; i++ {
z = (2*z + x/(z*z))/3
}
Span style= "White-space:pre" > return z
}

Func main () {
FMT . Println (CBRT (2))
FMT. Println (Math. CBRT (2))
}