How Do You Calculate f(3) for the Function f(x)?

  • Thread starter Thread starter lazo
  • Start date Start date
  • Tags Tags
    Function
Click For Summary
To calculate f(3) for the function f(x) defined as (1/x for x > 3 and 2x for x ≤ 3), determine which condition 3 satisfies. Since 3 is less than or equal to 3, use the second condition where f(x) = 2x. Therefore, f(3) is calculated as 2 * 3, resulting in f(3) = 6. The correct approach involves identifying the appropriate condition based on the value of x. Thus, f(3) equals 6.
lazo
Messages
1
Reaction score
0
Hi I need help!
Find f(3)
f(x) = (1/x, x > 3 ; 2x, x < or equal to 3)
How can i solve this problem?
 
Physics news on Phys.org
Follow the instructions!

You are given two conditions: "x> 3" and "x< or equal to 3". Which of those does "3" satisfy?

Now do the calculation corresponding to that condition:

If "x> 3" then f(x)= 1/x.

If "x< or equal to 3" then f(x)= 2x.
 

Similar threads

Undergrad ##f(2x)=f^2(x)-2f(x)-1/2## then find ##f(3)##
  • · Replies 17 ·
Replies
17
Views
3K
Graduate How to Find Critical Points of function f(x,y,z)
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Find f(z) given f(x, y) = u(x, y) + iv(x,y)
  • · Replies 8 ·
Replies
8
Views
799
Undergrad How to Find the Derivative of F = f(x)/f(x+dx)?
  • · Replies 15 ·
Replies
15
Views
2K
Undergrad Should the function f to be continuous for applying MVTI or not?
  • · Replies 4 ·
Replies
4
Views
1K
MHB Implicit function theorem for f(x,y) = x^2+y^2-1
  • · Replies 1 ·
Replies
1
Views
2K
High School What is the difference between writing f and f(x)?
  • · Replies 10 ·
Replies
10
Views
5K
High School How do I invert this exponential function?
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad Substitution in a definite integral
  • · Replies 6 ·
Replies
6
Views
3K
MHB Finding k for x is undefined at $x=2$
  • · Replies 3 ·
Replies
3
Views
1K