R programming Graphic commands

Question

What is the command for writing the below, as the legend at top left of a graph :

(\mu_1,\mu_2)=(8,7) where 8 and 7 come from the value of the variables mu1 and mu2, assigned in the program.

Answer 1

For this purpose, make use of the bquote to write the expression:

mu1 <- 7
mu2 <- 8
plot(1,1)
legend("topleft", legend=bquote((mu[1]*","*mu[2])==(.(mu1)*","*.(mu2))))