cth = function(x){
y = (exp(x) + exp(-x))/(exp(x) - exp(-x))
}
x = seq(-5,5,0.1)
y = cth(x)
plot(x,y)
Created on 2019-04-22 by the reprex package (v0.2.1)
cth = function(x){
y = (exp(x) + exp(-x))/(exp(x) - exp(-x))
}
x = seq(-5,5,0.1)
y = cth(x)
plot(x,y)
Created on 2019-04-22 by the reprex package (v0.2.1)