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NTA CUET Mathematics With Fully Solved 2023 Papers by Pearson
book

NTA CUET Mathematics With Fully Solved 2023 Papers by Pearson

by Prakash Gupta, Prashant Jain
April 2024
Intermediate to advanced content levelIntermediate to advanced
432 pages
16h 41m
English
Pearson India
Content preview from NTA CUET Mathematics With Fully Solved 2023 Papers by Pearson

CHAPTER 3

Differentiation and its Application

CHAPTER AT A GLANCE

Tangent and Normal

Let y = f(x) be a function with a graph as shown in the figure. Consider secant PQ. If Q tends to P along the curve passing through the points Q1, Q2, … i.e., QP, secant PQ will become tangent at P. A line through P perpendicular to the tangent is called normal at P.

ch03_img42.png

Geometrical Meaning of  ch03_eqn79

As QP, h → 0 and slope of chord PQ tends to slope of the tangent at P (see figure).

Slope of chord PQ =

slope of chord PQ =

⇒ slope of tangent at P = f ′(
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Publisher Resources

ISBN: 9788196874308