Question:
What is lim {. () } x ff x 1 equal to?
What is lim {. () } x ff x 1 equal to?
Options:
- a) -1
- b) 0
- c) 1
- d) 2
- a) -1
- b) 0
- c) 1
- d) 2
correct answer : a)
Explanation:
lim (( ))
x
ff x
→1
=
lim ()
x
x
→
—
1
22 11
= (1 – 1)2 – 1 = 0 – 1 = – 1
lim (( ))
x
ff x
→1
=
lim ()
x
x
→
—
1
22 11
= (1 – 1)2 – 1 = 0 – 1 = – 1