Precalculus Examples

Solve the Function Operation f(x)=(x+7)^2-2 if x<-4; -x+3 if -4<=x<=1; x+1 if x>1 Find f(-4)
Find
Step 1
Identify the piece that describes the function at . In this case, falls within the interval , therefore use to evaluate .
Step 2
The function is equal to at .
Step 3
Evaluate the function at .
Step 4
Multiply by .
Step 5
Add and .