We are given that $f(3)=4$ and a table of values of the derivative $f'$.
**Use Euler’s method with a step-size of $1$ to approximate $f(5)$.**
$x$ | $2$ | $3$ | $4$ | $5$
:- | :-: | :-: | :-: | :-:
$f'(x)$ | $-1$ | $-3$ | $0$ | $2$
$f(5)\approx$ [[☃ input-number 1]]