How to plot lnx ?

let us say

x= [0 1 2 3 4 5 6 7 8 9]
and y = ln(x)

plot (x,y ) does not work. Is y=ln(x) a wrong statement ?

[Titus Edelhofer]

Since I guess, y = ln(x) has thrown an error like "Undefined function or variable y" I would say, yes, this is a wrong statement. My suggestion: open the doc and search for logarithm ...

[Mohamad]

I did it is not understandable

Answer 1

[Azzi Abdelmalek]

x= [0 1 2 3 4 5 6 7 8 9]
y=log(x)
plot(x,y)

You should know that log is not defined for x=0

[Mohamad]

this is log, I want lnx, which acutally is logx of base e.

[Azzi Abdelmalek]

log is just the name of the function corresponding to ln(x). You can check

log(exp(1))

help log