Eric Nicholas K's answer to Suhaina's Junior College 2 H3 Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
One way to do this is what we call the L Hopital Rule, which is applied when the limit form after substitution is like 0/0 or infinity/infinity.

In such situations, the rule lets us differentiate both the top and numerator in the hope that the new value obtained is able to be calculated.
Suhaina
Suhaina
4 years ago
sorry is there any way to do this without the LHopital rule?
Eric Nicholas K
Eric Nicholas K
4 years ago
I did think of introducing the conjugate of the denominator at first and that was my first approach, but it led to a big mess.

If I manage to find a way, I will post a new one here.

EDIT: Found.
Eric Nicholas K
Eric Nicholas K
4 years ago
Sent in the alternative approach already