The RHS of both of these are defined for all of , soOriginally Posted bypashah

their domains are both the set of all real numbers.

Because these both represent parabolas which go to as

goes to , they can take all values greater than teir minimums.

The minimum of the first occurs when , which is at

, where , so for a. the range is .

The minimum of the second occurs when , which is at

, where , so for a. the range is .

RonL