(a)f(-3)
Evaluate
f(-3) means finding the value of the function f when x = -3.
To find f(-3), we can substitute -3 into the function and solve for the result.
If the function f(x) = x^2 + 2x - 1, then f(-3) would be:
f(-3) = (-3)^2 + 2(-3) - 1
f(-3) = 9 - 6 - 1
f(-3) = 2
So, f(-3) = 2.
(b)f(-2)
Evaluate
To evaluate f(-2), we can use the same function f(x) = x^2 + 2x - 1 and substitute x = -2 into the function:
f(-2) = (-2)^2 + 2(-2) - 1
f(-2) = 4 - 4 - 1
f(-2) = -1
Therefore, f(-2) = -1.