# Limits : Its Methods & Applications

Tuesday, February 10 2009 | 8:00 PM (IST)

The class is over

Duration:
60 minutes
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The presenter will teach Limits, their applications & methods of solving them in this session.

Many people often make a very critical mistake in math which is when solving something like y=(x²-4)/(x-2). We get the answer (x+2) and we say that f(2) is 4, which is not correct. When we solve such a fraction, we have an invisible condition saying that x?2. We can only say that y "approaches" 4 when x "approaches" 2.

Similarly, when we have y=tanx/sinx, people often infer that y(0)=1/cos(0)=1 which is again incorrect. We have to consider that the original function is not defined at x=0 and hence, we need the limits to help us out in this case too.

We will learn the properties of limits & the methods of solving limits like the L Hôpital''s rule, the 1^(8) form, factorization & rationalization methods & just a brief introduction on the sandwich theorem as it is not in JEE''s syllabus.

Once we are clear with limits, continuity & differentiability will follow. They are a part of limits and will be discussed in the same session.

We will then discuss some previous years questions & expected in limits, continuity & differentiability.
Previous session in the series: Pre Calculus: The Most Beautiful Functions in Calculus

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1559 days 5 hours 29 minutes ago

hi.can you help me?

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