Question

What is the range of f(x) = 1 - √x

Answer 1

Let f(x) = y

So:

y = 1 - root(x)

So find x in terms of y :

root(x) = 1 - y

Square both the sides:

x = (1 - y )^2

Clearly, y can take all the Real Values..

Answer 2

By plotting the function also, u can find the range:)

Answer 3

\[\sqrt{x}\ge0\]\[-\sqrt{x}\le0\]\[1-\sqrt{x}\le1\]