Calculus Solutions, Important Examples, Formulas and Videos
Calculus Important Questions  Page 6
Calculus Video Lecture  Page 7
Calculus is that branch of mathematics which mainly deals with the study of change in the value of a function as the points in the domain change. First, we give an intuitive idea of derivative (without act actually defining it). Then we give a naive definition of limit and study some algebra of limits. Then we come back to a definition of derivative and study some algebra of derivatives. We also obtain derivatives of certain standard function.
Limits: The above discussion clearly points towards the fact that we need to understand limiting process in greater clarity. We study a few illustrative examples to gain some familiarity with the concept of limit . Consider the function f(x ) = bserve that as x takes values very close to 0, the value of f ( x ) also moves towards 0.
In genral as , then l is called limit of the function f(x) which is symbolically written as .
Consider the following function g(x) = x , x . observer that g(0) is not defined. Computing the value of g(x) for the value of x very near to 0 we see that the value of g (x) moves towards zero .
So, .
This intuitively clear from the graph of y = x  for x ≠ 0
Note : we say is the expected value of f at x = a given the values of f near x to the left of a. This value is called the left hand limit of f at a.
We say is the expected value of f at x = a given the values of f near x to the left of a. This value is called the right hand limit of of f(x) at a if the right and left limit coincide , we call common value as the limit of f(x) at x = a and denote it by
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