### Testimonials

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" I have been looking literally for years to find a book on
calculus I can understand and I've finally found it.
I have written a lot of vertical market apps such as for the
communications industry, lots of third party CAD applications and
many, many apps using the procedural language contained within the
environment my client had available. My apps have been very math heavy
but not Calculus which is surprising I think becuase at least 3 of the
programs I wrote were considered impossible by many to write.
Nonetheless, I will be able to expand my repetoire by being able to
apply any calculus as a faster route to certain solutions. Thanks for
getting back with me. Your book is great." - Robert Jensen
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* " Thank you very much for making this website. Before starting this
I did not even know what calculus was. I had not taken a math
course(algebra) since highschool(6 years ago) and now I am getting
equivalent to a college level course of calculus for free. Your site
has reopened my interest in math, and I wont stop now until I understand
everything you are teaching. Again thank you for taking the time to
make such a great website, and respond to your viewers! " - Thomas Phillips
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I am really grateful for your wonderful calculus resource.
It has really helped me develop a high level
of understanding in calculus and see the profound implications that has
in the endeavor of science. The first chapter shows your deep
understanding of mathematics and how it underpins the inquisitive nature
of the human mind. Your introduction has given me a new perspective on
the state of the world and science itself. I now realize how I have
missed an opportunity to study the wonderful world of calculus. I'm
halfway through the course and am already beginning to see that it has
given me a new life. Thank you very much. I believe your initiative in
creating a resource will truly be rewarded by the universe.
- Krishna Teja Mokshagundam
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I am very grateful for people like you, which separate time in this
always hurry to somewhere world, to share knowledge to the next
generations. Thank you for your free knowledge shared in your web sites.
It is a rare pearl in the ocean of commercial want-more-money web sites.
Thank you for your work, it inspired me, because I saw that there is
someone in the world who cares and who thinks like me.
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* Thanks for this amazing book. I wish my high-school teacher had the knowledge to teach me all this. I have spent hours trying to figure out what
differentiation means, guess thats what kept me from getting good marks in math. Now I feel like i have been given a superpower which lets me
understand nature. Thanks a lot. - Prasanna Venkatesh
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I have worked in the electronics field for nearly 15 years, and have yet
to fully learn calculus. Mostly, this has been due to a lack of
necessity, since my job doesn't absolutely require it. Furthermore, I
had found little to no treatment of the subject that was approachable or
practical. So far, I am finding your book to be extremely approachable,
very well articulated, and beyond all other measures, practical. For
the first time in my life, I find myself WANTING to learn
calculus...thank you for that! - Tyler Speed
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