f is a function defined in R:

f(x)=x ;if x ϵ Q

f(x)= 0;if x ∉ Q

PROOF THAT lim f(x) = 0 when x --> 0

If you take the precise definition of the limit and put 𝛿=𝜀, I think this is right, isn't it ?

ah yes you solve it thank you

If you take the precise definition of the limit and put 𝛿=𝜀, I think this is right, isn't it ?

ah yes you solve it thank you