Evaluate the function ƒ(x ) = x 2 + 1 for ƒ(2)

Question

can you help me answer this 

Answer 1

This just means that you replace x with whatever is inside the parentheses.

 

f(x) = x² + 1

f(2) = 2² + 1

f(2) = 4 + 1

f(2) = 5

 

Make sense?

Answer 2

f(x) = x² + 1

 

f(2) = (2)² + 1

 

f(2) = 4 + 1 

 

       = 5