Question

Дана функция y=f(x), где f(x)=3-2x². Найдите f(-2)​

Answer 1

$f( - 2) = 3 - 2 \times ( { - 2}^{2} ) = 3 - 2 \times 4 = 3 - 8 = - 5$

Answer 2

To find the value of the function $f(x)$ at $x = -2$, you simply need to substitute $x = -2$ into the expression for $f(x)$. The given function is $f(x) = 3 - 2x^2$.

So, when $x = -2$, we have:

$f(-2) = 3 - 2(-2)^2$

Now, calculate:

$f(-2) = 3 - 2(4)$

$f(-2) = 3 - 8$

$f(-2) = -5$

So, $f(-2) = -5$.