SOLUTION: For the following function, find f(3). f(x)={ 2x^2 - 1 if 2< x <= 5 { 4 - 3x if 5 < x <= 7

Algebra ->  Functions -> SOLUTION: For the following function, find f(3). f(x)={ 2x^2 - 1 if 2< x <= 5 { 4 - 3x if 5 < x <= 7      Log On


   

Question 324671: For the following function, find f(3).
f(x)={ 2x^2 - 1 if 2< x <= 5
{ 4 - 3x if 5 < x <= 7
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x=3 is in the range (2%3C+x+%3C=+5) so use the corresponding function,f%28x%29=2x%5E2+-+1
f%283%29=2%283%29%5E2-1
f%283%29=2%289%29-1
f%283%29=18-1
highlight%28f%283%29=17%29