21/03/02 20:29:21.33 EygxTbXG.net
# m^n=n^mを満たす自然数は2,4の組み合わせのみ
# m^(1/m)=n^(1/n)
f <- function(x) x^(1/x)
curve(f(x),0,30,xlab='x^(1/x)',bty='n')
optimise(f,c(0,20),maximum = TRUE)
points(0:30,f(0:30),pch=19)
21/03/02 20:29:21.33 EygxTbXG.net
# m^n=n^mを満たす自然数は2,4の組み合わせのみ
# m^(1/m)=n^(1/n)
f <- function(x) x^(1/x)
curve(f(x),0,30,xlab='x^(1/x)',bty='n')
optimise(f,c(0,20),maximum = TRUE)
points(0:30,f(0:30),pch=19)