Question

What is F(-x)?
F(x)=x^3+1

Answer 1

f(-1) = 0

Explanation:

Evaluating a function for f(-x) is the same as evaluating it for f(-1).

So we plug in -1 instead.

f(-1) = x³ + 1

= (-1)³ + 1 (here we cube -1)

= -1 + 1 (here we subtract)

= 0 (and, this is the answer)

`\therefore` The answer is f(-1) = 0

Answer 2

F(-x) = 0

Explanation:

What is F(-x)?

F(-x) = F(-1)

F(x) = x³ + 1 F(-1)

F(-1) = -1³ + 1

F(-1) = -1 + 1

F(-1) = 0

So, F(-x) = 0