Ritesh Khan PhD(Math) at IIT ~ Calculus/Linear A/ODE/Numerical
13 Reviews

BEST possible guidance for LINEAR ALGEBRA // Applied Linear Algebra



Engineering Maths // University Maths (Pure & Applied both),

Real // Complex Analysis,

Abstract Algebra // Number Theory // Discrete Math

Math // A level // IGCSE // GCSE // AP // IB // SAT // ICSE // CBSE


Now it's time to understand Mathematics and overcome the fear. It is not a so-called hard subject. If you practice it regularly and you have some clear cut concepts then this subject is no more difficult for you.
For this, firstly you have to change your mindset(viz. Some students think Mathematics is very tough. It is not for me. You're requested to change this type of mentality), none can change you unless you want to change yourself. Secondly, you need an excel tutor who can guide you properly. My role is just as a guide.


Each exam and course have different strategies. I will be teaching this subject from the basic level and then slowly move to a higher level. So that you have no more difficulties. There is a vast difference between Mathematics learning and problem solving for exam purposes. Mathematics is not a memorizing subject if anyone understands this subject thoroughly then he/she doesn't need to memorize formulae or problems.

Students must be serious and hard-working, don't need to be so-called 'Meritorious'. How I am teaching is totally different from the conventional method. I provide assignments, mock tests after each week and I always prefer to take surprise tests. I also help how to interpret a problem geometrically or what's the motivation behind it. It's more important to visualize a problem rather than solving it. So, If you want to master this subject then I am a suitable person who can help you. Also, please note that I teach not for money but to share my knowledge, and to improve my knowledge(It is not necessary that students will always learn from his/her teacher. Sometimes the converse is also true I think). In a nutshell, I enjoy teaching and feeling proud when I see my students' success.

I have been teaching for more than 6 years(offline and online both). As of now I have guided more than 40 students(online) from the US, UAE, Qatar, Canada, Netherlands, Germany, Singapore, UK, Australia, Norway, Sweden, France, Saudi Arabia, S Korea, Turkey, China, Ghana, Kuwait, etc. This is a great experience for me. I prefer to teach using online whiteboard(Miro/Aww/Concept Board) where both of us can write real time on the same screen to understand the subject in an effective way and after the class I send the pdf of the class materials.

I also helped a lot of students (~ 100) in their assignments. My broad areas of Research are NUMERICAL METHODS(Using MATLAB, Python), DIFFERENTIAL EQUATIONS, LINEAR ALGEBRA, NUMERICAL LINEAR ALGEBRA, CALCULUS, LAPLACE TRANSFORMATION, etc. So, I can easily help you on these topics as well as PURE Mathematics(like REAL ANALYSIS, METRIC SPACES, ABSTRACT ALGEBRA, COMPLEX ANALYSIS, TOPOLOGY, etc) I am also thankful to them for providing me with good & challenging assignments.

The followings are the few important topics/courses that I taught so far.
1. X-XII Maths, IIT JEE(Main & Adv.)Maths, IB, CBSE, IGCSE, OLYMPIAD, BSc(Maths), NET(Maths), etc.
2. AP Calculus(all), Calculus 1,2,3,4.
3. Real Analysis(I, II & III), Metric Spaces, Topology, Algebra( Groups, Rings, Field), Functional Analysis, Linear Algebra(Eng.), Calculus, Differential Equations, Numerical Partial Differential Equations, Numerical Methods, MATLAB for Numerical Methods(University Level).
4. IIT Foundation Maths, GRE Math.
5. Advanced Differential Equations, Laplace Transformation, Numerical solutions of PDE(University Level).


■ Here are the few books which I usually follow
*CALCULUS by James Stewart & Thomas' CALCULUS
**ADVANCED CALCULUS(Geometric View) by J.J. Callahan
***LINEAR ALGEBRA by Sheldon Axler. \\ & Hoffman Kunze. \\ & S H Friedberg.
****NUMERICAL METHODS(MATLAB) by Steven C Chapra.\\ & Laurene V Fausett.



Currently, I am pursuing my Doctoral Degree(Ph.D.) in Mathematics(Applied) at the Indian Institute of Technology(IIT Chennai). I have a bright academic career till now and also qualified many competitive Exams like KVPY, JEE MAINS, WBJEE(West Bengal Joint Entrance Exam), IIT-JAM (MSc. Entrance in IITs)(AIR 240), GATE(AIR 78), NET(National Eligibility Test for Lectureship ) -JRF(AIR 9, AIR 50), etc. I was also an INSPIRE(DST)Fellow(SHE) in the period 2014-2019.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ For more information just Google my name. ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

■■ If you are interested then feel free to contact me(WhatsApp ONLY). Learn Mathematics & Enjoy Mathematics. Cheers! :)

Thanks & Regards,

*** No free demo session ***
***Please only serious students contact me(WhatsApp ONLY)***


  • Maths (Grade 8-Masters/Postgraduate)

  • Numerical methods (Beginner-Expert)

  • Calculus (Beginner-Expert)

  • Differential Equations (Beginner-Expert)

  • Numerical Analysis (Beginner-Expert)

  • Linear Algebra (Beginner-Expert)

  • Multivariable Calculus (Beginner-Expert)

  • Calculus 1, 2 (Beginner-Expert)

  • Calculus 3 (Beginner-Expert)

  • Real Analysis (Beginner-Expert)

  • Vector calculus (Beginner-Expert)

  • Engg Mathematics (Beginner-Expert)

  • Calculus 1 (Beginner-Expert)

  • Calculus 2 (Beginner-Expert)

  • Integral and Differential Calculus (Beginner-Expert)

  • Calculus 1, 2, 3, 4 (Beginner-Expert)

  • Integral Calculus (Beginner-Expert)

  • Differential and difference equations (Beginner-Expert)

  • Advanced Math (Beginner-Expert)

  • Numerical Methods for Engineers (Beginner-Expert)


  • Research (Jul, 2019Present) at IIT MADRAS, chennai
    I am doing PhD here and also I have to work here as a TA.
  • Math Expert (Feb, 2019Present) at Study.com
    It is also an online platform for solving various types of problems.
  • Math Expert (Mar, 2017Jan, 2020) at Chegg India PVT LTD
    I was working online at Chegg.com as Q&A expert for the past 4 years. Here I provided the solutions of various types of problems to students mostly from the US. I had also worked as Advance Math Expert(Calculus, Analysis, Linear Algebra, Numerical Analysis, Number Theory, etc). Due to lack of my time I left it in the beginning of 2020.


  • PhD in Mathematics (Jul, 2019now) from Indian Institute of Technology Madras, Chennaiscored 9 CPA
  • Masters in Mathematics (Jul, 2017Jun, 2019) from Ramakrishna Mission Vivekananda Educational and Research Institute, Belur Math, Howrahscored 94.3%
  • BSc(Hons.) in Mathematics (Jun, 2014May, 2017) from Midnapore Collegescored 82%
  • Higher Secondary (Mar, 2013Jun, 2014) from Nayabast P.M.S. Niketanscored 88.2%
  • Secondary (Feb, 2011Mar, 2012) from Nayabast P.M.S. Niketanscored 94%

Fee details

    4,0005,000/hour (US$54.7568.44/hour)

    *For 11-12 grade Mathematics:- INR 1500-2000/hr

    *For Graduation level Mathematics, depends on course and time.(Hourly charge 1500-2500)

    *I also offer Crash Course for a particular topic.

    *** Assignment help rate:- 55$-70$ per hour. Also depends on assignment, its deadline and difficulty level(if applicable).

    *** N.B.-All rates are fixed. It's about learning not bargaining.
    *** No payment through Teacheron will be accepted ***
    *** No free demo session ***

    ~ ~ ~ Find me at Google, LinkedIN, Websites.~ ~ ~

    Any type of suggestion is always welcome. Happy learning!

    Contact via WhatsApp ONLY.

13 Reviews
5 out of 5

User Photo October 12, 2021
Payment verified US$ 10

Genuine and Trustable teacher on Teacheron

He is best for any mathematics unit including the engineering level. I recommend him to anyone. Thank you for the help.

User Photo June 18, 2021
Payment verified US$ 57

linear algebra

Helped me with my linear algebra assignment, did a good job)

User Photo June 14, 2021
Payment verified US$ 170

Thanks a lot

Really help me a lot, I personally really recommend you guys

User Photo June 1, 2021
Payment verified US$ 1 (50 Coins)

Best Calculus teacher I have ever seen

He is a great Math teacher. I really wondered. Highly recommended to any serious student.

User Photo December 24, 2020
Payment verified US$ 176


He's a very good teacher. I had a problem with some math subjects and he taught me it, and he's committed to time.

User Photo November 26, 2020
Payment verified US$ 1 (50 Coins)

Best pre-calculus tutor(REVIEW)

Amazing! One of the best Calculus teachers. Thanks 🙏

User Photo September 25, 2020
Payment verified US$ 4 (300 INR)

Best Linear Algebra Tutor ever

He is one of the best teachers, I would like to appreciate his commitment, hard work and patience. 100% Recommended to anyone. May Almighty bless him.

User Photo September 1, 2020
Payment verified US$ 4 (300 INR)

Excellent Calculus Tutor with vast knowledge

Very talented and meticulous in his approach. One of the best Pre Calculus and Calculus teachers. Don’t looking for anywhere else, he is the most appropriate in these topics. Thank you!

User Photo August 5, 2020
Payment verified US$ 4 (300 INR)

The most amazing Math teacher in my life

Undoubtedly he is the best Linear Algebra teacher I have ever come across. He is very polite, smart and supportive. I never found this subject hard because I know he is there to guide me. Thank you very much sir:)😎

User Photo June 24, 2020
Payment verified US$ 4 (300 INR)

Best calculus Teacher

Ritesh sir is the best Calculus teacher. He had been teaching me calculus for the last 4 months. Now I have the confidence that I can do any problem from Calculus and Differential Equation. I am grateful to him.

User Photo June 22, 2020
Payment verified US$ 26

Great at Numerical Methods

He is capable at what he is doing. I recommend him. He helped me a lot.

User Photo June 3, 2020
Payment verified US$ 4 (300 INR)

Best Calculus 4 & Real Analysis Tutor + More than 100% satisfied

Ritesh is very knowledgeable and try to understand the problems of a student. I am very much satisfied with him for my calculus 4 & Real Analysis exam. In calculus 4, I got 100/100 & in Real Analysis I got 95/100!! Amazing!! He is the Best calculus teacher I had ever & an automatic choice for Higher Level Math. Highly recommend. I am grateful to you...
Thank you, Take care.

User Photo May 31, 2020
Payment verified US$ 50

Excellent 10/10

Highly Recommend, fast, trustworthy and very knowledgeable!!