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f (x) = x - 5. Find f'(x) and its domain.


F X X 5 Find Fx And Its Domain class=

Sagot :

Answer:

C

Step-by-step explanation:

f(x) = √x - 5

domain: [0. ∞)

range: [-5, ∞)

Let y = √x - 5

√x = y+5

x = (y+5)²

Switch x and y:

y = (x+5)²

f⁻¹(x) = (x+5)²

domain of f⁻¹(x) is the range of f(x):  [-5,∞)