20 points. precalc !
find the limit of the function algebraically.

The limit does not exist. For small enough we have and , while for small enough we have and . This means to the left, the limit has negative sign, and to the right, the limit has positive sign. Direct substitution gives the undefined which indicates the limit is infinite, but the sign changes depending on the direction.

its 4 because 2 times 2 is 4, if you double the number two you get four