To develop calculus for functions of one variable, we needed to make sense of the concept of a limit, which we needed to understand continuous functions and to define the derivative. Limits involving functions of two variables can be considerably more difficult to deal with; fortunately, most of the functions we encounter are fairly easy to.
Because the partial derivatives of a function are necessary to construct the limit in the definition of differentiability, a sort of converse to Theorem 3.10 is: If is differentiable at, then the partial derivatives of must all be defined at. Use this result to show the following functions are not differentiable at the indicated point. (a).
These solutions for Continuity And Differentiability are extremely popular among Class 12 Commerce students for Math Continuity And Differentiability Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the NCERT Book of Class 12 Commerce Math Chapter 5 are provided here for you for.
Continuity and Differentiability Up to this point, we have used the derivative in some powerful ways. For instance, we saw how critical points (places where the derivative is zero) could be used to optimize various situations. However, there are limits to these techniques which we will discuss here. Basically, these arise when there are some.
In this professional problem, you will prove the following statement. Let, and let be given. If, then implies that, and therefore. Consider the function By switching to cylindrical coordinates, you could show the limit of as is 0. Instead, you will show find limit using the definition of a limit. Your goal is this: given any, you must show there is a so that For the given point and.
Continuity and Differentiability is the 5 th chapter of NCERT Exemplar for Class 12. This is an important chapter as it lays a foundation for Differential Calculus. The topics covered in this chapter are continuity, differentiability, algebra of continuous functions, derivatives of composite functions, implicit functions and inverse trigonometric functions, exponential and logarithmic.