# Ex 5.1, 9 - Chapter 5 Class 12 Continuity and Differentiability (Important Question)

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Ex 5.1, 9 Find all points of discontinuity of f, where f is defined by = , <0 & 1 , 0 Given = , <0 & 1 , 0 Case 1 At x = 0 f is continuous at x = 0 if L.H.L = R.H.L = 0 i.e. lim x 0 = lim x 0 + = 0 & 0 = 1 Thus, L.H.L = R.H.L = f(0) f is continuous at =0 Case 2 Let x = c (where c > 0) = 1 f is continuous at x = c if lim x = ( ) Thus lim x = ( ) f is continuous for =( greater than 0). f is at continuous for all real numbers greater than 0. Case 3 Let x = c (where c < 0) = = = 1 f is continuous at x = c if lim x = ( ) Thus , lim x = ( ) f is continuous for = ( c is less than 0 ) f is continuous for all real numbers less than 0. Thus, f is continuous for x R {0} Hence f(x) is continuous at all points f is continuous

Chapter 5 Class 12 Continuity and Differentiability

Ex 5.1, 9
Important
You are here

Ex 5.1, 13 Important

Ex 5.1, 16 Important

Ex 5.1, 18 Important

Ex 5.1, 28 Important

Ex 5.1, 30 Important

Ex 5.1, 34 Important

Ex 5.2, 5 Important

Ex 5.2, 9 Important

Ex 5.2, 10 Important

Ex 5.3, 10 Important

Ex 5.3, 14 Important

Example 32 Important

Example 33 Important

Ex 5.5,6 Important

Ex 5.5, 7 Important

Ex 5.5, 11 Important

Ex 5.5, 16 Important

Ex 5.6, 7 Important

Ex 5.6, 11 Important

Example 41 Important

Ex 5.7, 14 Important

Example 42 Important

Ex 5.8, 5 Important

Example 44 Important

Example 45 Important

Example 47 Important

Misc 6 Important

Misc 15 Important

Misc 16 Important

Misc 23 Important

Class 12

Important Questions for exams Class 12

- Chapter 1 Class 12 Relation and Functions
- Chapter 2 Class 12 Inverse Trigonometric Functions
- Chapter 3 Class 12 Matrices
- Chapter 4 Class 12 Determinants
- Chapter 5 Class 12 Continuity and Differentiability
- Chapter 6 Class 12 Application of Derivatives
- Chapter 7 Class 12 Integrals
- Chapter 8 Class 12 Application of Integrals
- Chapter 9 Class 12 Differential Equations
- Chapter 10 Class 12 Vector Algebra
- Chapter 11 Class 12 Three Dimensional Geometry
- Chapter 12 Class 12 Linear Programming
- Chapter 13 Class 12 Probability

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.