" I would like to thank you again and to tell you that with the help of
your book, I managed to get a very good score in mathematical analysis
exam. Which I am very happy about and I really
feel I have gained a lot of knowledge from your book and it completely
changed the way I understand things. "
" The one thing I hated about calculus was that they never
explained what anything was. Up until now, I never even understood what
calculus was even a study of, except finding whatever a derivative is
and how y of something looked on a graph. I just read only 3 chapters
of your book and I have been doing calc for close to 9 hours now. I am
totally enthralled by calculus now. I never thought i would say it is
my favorite subject. Excellent work! Thank you so so much. "
" My name is Rafael Roquetto, I am a computer science graduation student
in Brazil, and work as a computer programmer for Citigroup IT Center. I
have always been trying to understand calculus. I had already managed
to understand it "graphically", geometrically, but I was never able to
get the true calculus philosophy: THE RATE OF CHANGE OF A FUNCTION,
DEPENDENT AND INDEPENDENT DIMENSIONS and whatsoever. Therefore, I would
like to thank you for writing this wonderful tutorial, book, or whatever
you call it. Your work really helped opening my mind, and I feel really
enlightened now. Thank you very much. "
" Wow, this is absolutely amazing, you give background information then you connect that with calculus without all of the number crunching. This made me think, which I love to do, and I thank you for that. "
" I am on a
quest for knowledge, or more precisely, questions, and then answers to
those questions. I discovered Atheism then, Philosophy, Psychology and
re discovered Physics (after an A-Level of memorisation and no answers)
and am on a journey of actually learning what the world is about, rather
than having to try and remember what I am told it is about. I believe
Maths is a big part of the journey. From a little searching, I found
your book and with such a great start, how could I not read on. I have
no practical reason for learning any of this, other than for my own
pleasure, as I am currently in a year of limbo before I go to University
to do a BA in Video (or documentary). But I am currently loving
learning, and your book is finally giving me an understanding of things
I before had just been told to take for granted. "
" For many days I had been seeking for such a comprehensive guide on
calculus. I also agree that nothing is impossible to learn and feel when
you split it into fragments of logical components. This book makes us
believe the same. Thank you very much for writing and providing such a
good book. I teach Mathematics and English literature and I believe
Mathematics can be interesting and romantic as literature too, when there
will be writer like you. "
" I love your book... so far I'm on Chapter 6, and I love it so much
that I start reading it any chance I can get. Thank you so much for
Understanding Calculus. What a great gift you've given so many people. "
" I love the way you are presenting the course. I am a 52 year old
businessman, decided to go back to school to enhance my knowledge and
improve my skills. Currently I am taking some post graduate courses in
Finance. Since I forgot all math (algebra and Calculus), I search on
the net and I am very lucky to find your fantastic book. I just started
today. In fact, I had a plan to jump right away to derivatives and
integration, but the way you are presenting the course impressed me a
lot, and decided to read it all word by word. "
" I think you have articulated Calculus where the average person not
versed in it - can understand it, and apply it to problems. I also feel
you have defined Calculus and its concepts very well, especially how it
lends to a more scientific approach to life.. critical thinking,
broading one's scope of the things. I want to thank you for offering
this. " - Beatrice Lewis
" Wow! Your section on why study calculus actually made me want to study
this stuff and I was just browsing. Calculus seems almost philosphical when
you explain it in you intro. You made it sound interesting! A feat in of itself!
Well done sir! "