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Faraz Karim

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

The ** Atanh** function in the Go programming language is used to find the inverse hyperbolic tangent value passed to it as input.

To use the `Atanh`

function, you must import the `math`

package in your file and access the `Atanh`

function within it using the `.`

notation (`math.Atanh`

). Here, `Atanh`

is the actual function, while `math`

is the Go package that stores the definition of this function.

The definition of the `Atanh`

function inside the `math`

package is shown below:

The `Atanh`

function takes a single argument of type `float64`

that represents the angle whose inverse hyperbolic tangent value you want to find.

The `Atanh`

function returns a single value of type `float64`

that represents the inverse hyperbolic tangent value of the argument. The possible range of all return values is between *negative infinity* and *positive infinity*.

An exception to the above statements is when you pass something that is less than

-1, greater than+1, or`NAN`

as an argument. In these cases, the`Atanh`

function returns`NAN`

.

Below is a simple example in which we use the `Atan`

function to find the inverse hyperbolic tangent value of 0.5:

package mainimport "fmt"import "math"func main() {x := math.Atanh(0.5)fmt.Println(x)}

The following example shows how passing `NAN`

as an argument makes the `Atanh`

function return `NAN`

:

package mainimport "fmt"import "math"func main() {x := math.Atanh(1.5)fmt.Println(x)}

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CONTRIBUTOR

Faraz Karim

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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