Question

How do you find the domain and range of `y= -1/2 x ^2`?

Answer 1

Domain: `RR`
Range: `RR <= 0`

Explanation:

`(-1/2x^2)` is defined for all Real values of `x`
`rArr` the Domain is `RR`

`y` is `<=0` for all values of `x`
`rArr` the Range is `RR <= 0`