solution must be like of the example below same format

Based on the rst problem that we have provided, there were concepts that were emphasized, and these are the following: 1. First, We do not say that lim f(x) \"equals DNE," nor do we write \"limf(x) = DNE, (it in this way) x)-2 x)-2 Because \"DNE" is not a value. (limit of a function as x approaches -2 equals DNE nor do we write lim of a function as x approaches -2 equals DNE) In the example a while ago, \"DNE" indicated that the function moves in different directions as to its variable approaches a from the left and the right. Second, We have been specifying whether x will approach a value a from the left, through values less than a, or from the right, through values greater than a. This direction may be specied in the limit notation, lim x) by adding certain symbols. x>a o If x approaches a from the left, or through values less than a, then we write a negative symbol Lim f(x). xm- o If x approaches a from the right, or through values greater than a, then we write a positive symbol. Iim x). x>a+ 3. And third, we say lim f(x)= L, if and only if Lim f(x)=L and lim f(x)= L x)a xm- x)a+