137k views
0 votes
Determine f(5)
f(x)=2x'2-1 if x < or equal to -1
3x+2 if x > -1

1 Answer

3 votes

Answer:

To make it clearer, I just put every thing under the formal form

f(x) =
\left \{ {{2x^2-1~~~~if~~~~ x\leq -1} \atop {3x+2~~~~~if~~~~~x>-1}} \right.

Explanation:

Now, you have 2 equations with 2 conditions. One is > -1, and one is < -1.

The question is about f (5). So, which equation you use to replace x = 5? The first one or the second one? and why?

Answering those questions help you understand how it works.

User Ealdent
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories