Answer
$x$ enters into a function, where we subtract $1$ and take square root. The output comes as a result of this diagram.
$x$ => $f(x)$ => $\sqrt{(x-1)}$
(See examples below)
Work Step by Step
As a machine diagram, we can imagine:
$x$ enters into a function, where we subtract $1$ and take square root. The output comes as a result of this diagram.
$x$ => $f(x)$ => $\sqrt{(x-1)}$
For example:
$x=1$
$1$ => $f(1)$ => $\sqrt{1-1}=\sqrt{0}=0$
$x=5$
$5$ => $f(5)$ => $\sqrt{5-1}=\sqrt{4}=2$
$x=10$
$10$ => $f(10)$ => $\sqrt{10-1}=\sqrt{9}=3$
$x=26$
$26$ => $f(26)$ => $\sqrt{26-1}=\sqrt{25}=5$
