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An Introduction to Econometric Theory
book

An Introduction to Econometric Theory

by James Davidson
October 2018
Beginner content levelBeginner
250 pages
12h 14m
English
Wiley
Content preview from An Introduction to Econometric Theory

CEssential Calculus

The derivative of a function images at a point images, when defined, is the tangent to the function at images. Formally

images

The function is said to be ‘differentiable at images’ if the limit exists and takes the same value for images and images. The derivative at images is also written for brevity as images.

Rules for differentiation include the following:

  1. Function rules:
    1. If images, images
    2. If ,
    3. If ,
  2. Linear rule: , and constants.
  3. Product rule: .
  4. Quotient ...
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Publisher Resources

ISBN: 9781119484882Purchase book