Question

Be sure you understand the use of function notation by working this exercise.

f(x) =
x + 1
x − 1
Determine the following.
(a) f(6)


(b)
f(−3)



(c) f(0)


(d) f(2c)

Answer 1

(a) f(6)=6+1/6-1

=7/5

=1.4

(b) f(-3)=-3+1/-3-1

= -2/-4

=1/2 or 0.5

(c) f(0)=0+1/0-1

= +1/-1 = -1

(d)f(2c)

recall that C's final answer is -1

so f(2c)= 2(-1)

= -2

hope it's clear?