Graph y₁ = √2 - x, y₂ = √x, and y₃ = √2 - y₂ in the same [-4, 4, 1] by [0, 2, 1] viewing rectangle. If y₁ represents f and y₂ represents g, use the graph of y₃ to find the domain of f ° g. Then verify your observation algebraically.