Question

f (x) = ± $\sqrt{1-x^2}$ is a function

• A. True
• B. False

Answer 1

The correct option is B

False

Its not a function, because the same value of x will result in two values of f(x).

For example, if f (0) is ± 1, then f is not a function.

In a function, one input results in only one output