Question

f(x) = sqrt(- 2x) Determine for each value whether it is in the domain of f or not.

Answer 1

Answer:

only -2 is in the domain

Step-by-step explanation:

For negative values under the sqrt, there is no real answer, hence

-2x ≥ 0

only for x=-2 this is the case.

The domain represents all the valid input values for x.