LIM (x tends to 3) 1 / x = 1 / 3

LIM (x tends to 3) 1 / x = 1 / 3

To prove by definition that limit is actually a form of writing is to draw a gourd according to the example
The limit of the certificate is 00
    |1/x-1/3| = |x-3|/(3|x|) < |x-3|/6 < ε,
Only | x-3|