Reciprocal of the square of a number

Reciprocal of the square of a number

rsqr(x)

Arguments

x	a numeric vector or array

Examples

rsqr(2)
#> [1] 0.25
rsqr(1:10)
#>  [1] 1.00000000 0.25000000 0.11111111 0.06250000 0.04000000 0.02777778
#>  [7] 0.02040816 0.01562500 0.01234568 0.01000000