Step-by-step explanation:
multiply and divide by (x+1)
in denominator (x-1)(x+1) = x²-1
now,
we know lim tan∆/∆ =1
x–1
at last we get 1×(1+1)
it is equal to 2
option b is correct
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Step-by-step explanation:
multiply and divide by (x+1)
in denominator (x-1)(x+1) = x²-1
now,
we know lim tan∆/∆ =1
x–1
at last we get 1×(1+1)
it is equal to 2
option b is correct