在 R 中找到第 N 个根

Question

我们如何找到 R 中的第 N 个根？

4^2 = sqrt(16)

但是反变换的代码片段是什么;

4^7 = ???

Answer 1

简单

sqrt(4) == 4^(1/2)
# 7th root of 4
4^(1/7)

In calculus, roots are treated as special cases of exponentiation, where the exponent is a fraction:

$\sqrt[n]{x}}=x^{1/n}$

Find the Nth root in R