Go language provides inbuilt support for basic constants and mathematical functions to perform operations on the numbers with the help of the math package. You can find order-one Bessel function of the first kind with the help of J1() function provided by the math package. So, you need to add a math package in your program with the help of the import keyword to access the J1() function.
Syntax:
func J1(a float64) float64
- If J1(±Inf), then this function will return 0.
- If J1(NaN), then this function will return NaN.
Example 1:
// Golang program to illustrate // the math.J1() function package main import ( "fmt"
"math"
) // Main function func main() { // Finding order-one Bessel
// function of the first kind
// Using J1() function
res_1 := math.J1(math.Inf(-1))
res_2 := math.J1(math.Inf(1))
res_3 := math.J1(4)
res_4 := math.J1(math.NaN())
// Displaying the result
fmt.Printf( "\nResult 1: %.2f" , res_1)
fmt.Printf( "\nResult 2: %.2f" , res_2)
fmt.Printf( "\nResult 3: %.2f" , res_3)
fmt.Printf( "\nResult 4: %.2f" , res_4)
} |
Output:
Result 1: 0.00 Result 2: 0.00 Result 3: -0.07 Result 4: NaN
Example 2:
// Golang program to illustrate // the math.J1() function package main import ( "fmt"
"math"
) // Main function func main() { // Finding order-one Bessel
// function of the first kind
// Using J1() function
nvalue_1 := math.J1(2.0)
nvalue_2 := math.J1(4.1)
// Sum of the given numbers
res := nvalue_1 + nvalue_2
fmt.Printf( "%.2f + %.2f = %.2f" ,
nvalue_1, nvalue_2, res)
} |
Output:
0.58 + -0.10 = 0.47
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