What is a function?

In this lecture, Bhavna Khurana explains the following

1. Definition of a function.
2. When is a function said to be well defined?
3. One-One (injective)
4. Onto (surjective)

[vineetbj]

Mam is teaching in Vajiram and Ravi, New Delhi... I must say she is the best teacher of maths optional... Nobody can touch her levels and expertise in maths.

[JeetSingh-nuzo]

Beauty with brain is a very dangerous combination
Please upload more videos on maths

[vineetbj]

Thank you mam. Your teaching style is really awesome. Can't wait more to attend your classes.

[siddharthathakur]

Ma'am is one of the best teachers..

[mathematicsculture]

Ma'am top teaching style, I request you to continue more and more times ....

[ronycb]

Really like your style of explanation and the video I also had the doubt of well defined meaning but found out on internet later that it means uniqueness iff the existance is guaranteed

[vijaykumarpal]

You are doing very grateful job...please continue and make video s on integral calculus or linear mam very few people teach on YouTube in a very interesting way as like you I want to learn more with your guidance 🙏🙏

[MathematicalMinds]

Bhavana khurana is my favourite ma'am

[vikassingla]

Mam please launch paid full length course on unacademy for upsc

[ronycb]

Please make more videos if you can spare the time and thank you mam

[kollisomeshrao]

Mam is there online classes for modern algebra and real analysis

[thelionfizz]

Ma'am ! please teach us field theory !

[ronycb]

Mam would like it if you could explain:
ring theory i.e fields, polynomial rings, integral domains etc. cyclic and permutation groups, invariant and factor subgroups etc. and also maybe linear algebra subspaces, quotient spaces etc they really bugs me since I am lagging in syllabus .
Thank you and Regards,
Rony C B (student, IGNOU)

[mansitiwari]

Mam can I get ur ...maths optional pdf ??

[ramanujancollegeofmathemat]

MAM, MY OPTIONAL IS MATHEMATICS IN UPSC AND I WANT TO LEARN MATHEMATICS FROM YOU IN OFFLINE MODE. 🙏🙏PRESENTLY WHERE DO YOU TEACH ? 🙏

[math_makerbrooo]

Guru mata jee.... Pg 98 S.C Mallik and arora.... Mathematical analysis please some kar do

[kapil]

Where do u teach Ma'am?? I m really confused. IMS has online courses but I want to be taught by you Ma'am..

[ronycb]

For surjectivity the co domain and range of the mapping have to coincide ie be equal - just another Bourbowski

[diwakaryadav]

Madam online class lethe ho kya?I m from I come to delhi ...it will be expensive for take online lecture class IMS and ramansari are taking online lecture but I m not able understand their lecture

[mathsiscool]

Mam please start online courses for upsc