Good in giving though-invoking concept and visualization of differentiation, chain rule, relative rate of change, as well as Newton's linear approximation.

These corresponding demo example are illustrative and help us understand the main idea and underlying metaphor of differential operator "D" and symbol df/dx.

In addition, the technique of domain change in differentiation by using exponent and logarithm and implicit differentiation is really powerful and useful.

Not a class for someone with no calculus experience. However, if you have some calculus knowledge it will deepen your knowledge more than any other MOOC I have found. Truly a great course.

So much fun, and hits all sorts of things I'd always wanted to know. The homework took me a long time, so I didn't get to watch all the bonus lectures, but the ones I did were really interesting.

It's really a learning experience. Questions have the practical approach. It provides a wider prospective of knowledge and application. Thank you for being a part this group.

This course has an appropriate amount of rigor for an intermediate math course. I was pleasantly surprised at how much I have learned.

Great for reviewing concepts! Techniques for evaluating complex limits and the Taylor series have been explained very well.

Excelente curso donde aprendí el cálculo de variable real, lo recomiendo mucho ya que se aprende bastante acerca del tema

Highly application oriented course. Better to have strong grounding in theory and principles before starting.

It is a very informative course!

This is an extremely useful and informative course into which Dr. Ghrist has poured an enormous amount of energy, work, knowledge, and forethought. He is an exceptionally talented polyglot of both Mathematics and English, but I could have used additional explanations as to how to tackle the problems. I would have preferred it if solutions would have been provided for the quizzes and challenge problems. I believe that one learns calculus best this way, but Dr. Ghrist has become another excellent mentor that I have been fortunate enough to have in my quest to understand calculus.

As with part I, a real benefit of this course is its quality practice problems. They require you to work. I usually spent at least 30 minutes per problem (sometimes hours at the extreme), so you end up accumulating a lot of practice, and it certainly pays. I haven't previously put much effort in math, and as a result I would often make errors in my derivations. Not only does this course expose you to a lot of methods and knowledge, but the sheer amount of practice has made me inherently less prone to errors. Which makes math a LOT more fun.

Problems are really interesting. These courses helped me to understand basic approaches and methodologies of single-variable calculus. I got a lot of satisfaction passing them and solving the problems especially challenging problems. I think these lectures fit purposes of people who aim to generalize and structure their knowledge of single-variable calculus. Thank you very much! I really hope to find similar courses on other fields of mathematics (multivariable calc, linear and abstract algebra)

Smart way of teaching, giving you the chance to learn new things with a very interactive way, enlarging your brain and synapses fire in it.

The core home work is the best practice to what you have learnt in the lectures and do not be discouraged solving the challenging H.W., keep going and "think outside the box.", you will learn a lot.

Thanks Prof. Ghrist, you are awesome.

Excelente, felicitaciones , solo que es triste no poder disfrutar al 100% un curso de esta calidad al no estar traducido al español, le agradecería que por favor lo traduzca del ingles al idioma español ya que solo esta parcialmente traducido.

nuevamente felicitaciones por la gran didáctica con la que imparte el curso y sobre todo por la calidad con la que enseña.

The slides with animation, about a wide range of applications, are close to a masterpiece. One thing that could easily be improved, though, is to make the audio more conversational: the spaces between between words, to slow the rhythm, do not really help. Apart from this minor irritation, this is a great course, in which I re-learnt and learnt a lot.

After completing part 1, I headed for this second part of the 5 part series. Yes, it is a hard course but if you are persistent and keep at it, things will eventually make sense and you'll have some very good tools at your disposal to solve complex problem. Massive Thanks to Prof G and Team for this course.

Charmed!. A course that strengthens the knowledge acquired in Chapter 1; and broadens the horizon with the introduction of a new concept (differentiation) with countless applications.

Congratulations to Professor R. Ghrist and the University of Pennsylvania team; for such a dedicated and powerful course.

When I encounter differentials in the future, I will think of the techniques and graphics that I learnt in this lessons as either a mental tool or a reference. The part 2 is as good as the first part 1 and I expect to this level of quality in more advanced chapters.

The course is nicely designed. Quizzes make sure that whatever the professor taught in the course is delivered to you. I liked the course. It refreshes a lot of concepts about differentiation. Highly recommended if you want to refresh your concepts.

These calculus courses by Prof Ghrist are absolutely great. I'm a high school math teacher and tutor, and these courses provide a ton of interesting insights that I can pass onto students, even though they are not be studying calculus yet.

This course really helped me to learn various different skills to differentiate and developed my interest in calculus a lot..I really thank Sir Robert Ghrist from bottom of my heart for designing such a wonderful course for learners...

Excellent Course

A new look at the concepts of Limits, Taylor and Derivatives that expand your mathematical thinking and Flourishes the math another time. This is however not confusing though but more of a talent bonus.

I really love this course: the teaching style of Prof. Ghrist, the quality of each lecture video, interesting bonus materials, and challenging problems. I also get to love Calculus more.

(going to take the 3rd course)

Amazing. Even if you took Calculus before, find several hours for this course, it explains a lot of interesting nuisances of differentiation with lots of unexpecting applications and thrilling problems.

This course introduces brand new perspectives and concepts of derivatives and differentials. It also provides applications of differentials in different fields, such as Physics and Economics.