Question

Найти f(-1),если f(x)=(2x+1)(3/x-3)

Answer 1

F(-1) = (-2+1)*(-3/-1-3)=-1*(-3/4)=3/4

Answer 2

f(-1) = (-1•2+1) (3/-1-3) = (-2+1) (3/-4) = -1 • -3/4= 3/4

Answer 3

To find the value of f(-1), simply plug in -1 for x in the given function f(x) and evaluate it.

f(x) = (2x + 1)(3 / (x - 3))

f(-1) = (2(-1) + 1)(3 / (-1 - 3))

Now, perform the calculations step by step:

f(-1) = (-2 + 1)(3 / (-4)) f(-1) = (-1)(3 / (-4)) f(-1) = -3 / (-4)

To simplify further, remember that a negative divided by a negative is positive:

f(-1) = 3 / 4

So, f(-1) = 3/4.