How to make the square root symbol in axes labels?

Question

How can I make the square root symbol to appear ceiling an axis label in R?

Solution

Use expression(sqrt(x)), see the help file (by doing ?plotmath as mentioned in mnel's comment) for mathematical annotations in R plots.

plot(1:10,
     main='Example',
     ylab=expression(sqrt(x)))

which produces

Comments

[mnel]

+1. There is no need to look online for the help. ?plotmath will give the same help page

[IRTFM]

I'm downvoting (the question, not the answer) because @user1730122 crossposted to r-help.