1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Advice on calc. 1

  1. Jan 12, 2010 #1
    I'm taking calculus 1 and I'm a bit nervous because I forgot some of the Algebra formulas and trig. unit circles. I know I can review them all with no worries, but I had a feeling of doubt(or cold feet).

    Can I have some advice in this math course and what I should watch out for.
    thanks.

    -Kaos-
     
    Last edited: Jan 12, 2010
  2. jcsd
  3. Jan 12, 2010 #2
    Make sure you are comfortable with algebra and trig.
     
  4. Jan 12, 2010 #3

    cronxeh

    User Avatar
    Gold Member

    Be afraid. Be very afraid. You may not be able to fall asleep after the first time you see an integral.
     
  5. Jan 13, 2010 #4
    Definetly know all the important values of sin cos and tan of the unit circle including their graphs, periods, and such; and obviously csc sec and cot. In my opinion, trig comes in more to calculus than algebra, but you will need some basic reminders of factorization, quadratics, and it wouldn't hurt to have memorized formulas for difference of perfect squares, binomial factors, etc. Other topics might include exponents and their laws, logarithmic functions, basic geometrical area formulas, and shapes such as circles, ellipsis, parabolas, hyperbolas, etc. I would check out what your college pre-calc class covers and pick the topics you're less familiar with. Anything with matrices you can forget until Linear Algebra.
     
  6. Jan 14, 2010 #5
    +1 on everything above, plus a few things.

    Factoring! Factoring! Factoring! Did I mention that it's important to know how to factor accurately?

    Know how to work with quadratics, and practice completing the square too--it's useful. Don't forget your point-slope and slope-intercept forms and how to interconvert between them. You'll need to know how to calculate the formula of a line when you know just the slope and a point.

    Also, you'll need to be solid with logarithms and exponents--take the time to review the properties of logs and exps now. Know how to work with logs of bases other than e (although e is the most used) and how to interconvert them (change of base formula.)

    If you struggle with absolute values and inequalities, you'll struggle when you need to study the epsilon-delta proofs.

    +1 on knowing your trigonometry. But I found that if you're even half-competent in trig, it's the algebra that kills. My college algebra professor told her class that "to really learn to DO algebra, study calculus." Words of truth. Algebra+trig is the language of calculus.

    Study the inverses of the trig functions: arcsin, arccos, arctan, etc. Know what they look like on a graph, how they relate to their parent functions, and know their domains.

    If you plan on going further in Calculus, then you'll need to remember trig identities also, so start re-memorizing them now (especially the pythagorean, double-angle, and power-reduction.)

    It's definitely helpful to remember some formulas from geometry: circumference/perimeter of a circle/square; area of a rectangle/triangle/circle; volume of a cube/cone/sphere; etc.

    The first chapter of most calculus books is an succinct review of relevant topics in algebra and trigonometry. Use it as a pre-calc. study guide or as needed for review; either way it's a valuable resource.

    Good luck! I thought that learning to take functions apart (taking the derivative) was fun; and now I'm finding that putting them back together (integrating) is even more fun! :)
     
  7. Jan 14, 2010 #6
    calc 1 is a joke. dont worry about anything until calc 3
     
  8. Jan 14, 2010 #7
    joking, well...half joking. but seriously my advice is general advice for learning and not just calculus. Don't learn how to use formulas. learn the concept behind them and use that concept to use the formula properly. Equations are only a weapon. The weapon is only as good as the person using it.

    Memorization is over rated also. If your calc teacher makes you memorize those arctan integrals and stuff, dont memorize them and do worse on the tests in a childish attempt to get back at the prof vicariously through your mark.
     
  9. Jan 14, 2010 #8
    +1 on what dacruick said about memorization. I don't retract what I said about memorizing the identities (or any formulas) though. You HAVE to understand how they work--why they are what they are, not just how to use them. You'll save yourself a lot of time if you don't have to rederive them every time you need to use them though. OTOH, memorization is temporary, understanding is permanent, so if you do understand them, you can rederive them later as needed IF you do happen to forget.

    Cheers.
     
  10. Jan 14, 2010 #9
    This advice is very true. It's better to understand the formulas and where they came from. I had classmate's trying to memorize double trig. identities, but never try to derive these identities or understand them. I forgot to understand or derive them, thus; I will review a lot in trig. this weekend.
     
  11. Jan 14, 2010 #10
    Knowing algebra very well and trig. fairly well will get you good marks... but only if you commit to learning the principles of calculus. If your goal is to gain a true understanding of calculus, then don't stress so much about your algebra and trig.

    However, if your tests are timed, and you are assigned large amounts of graded homework; then you'd better spend your free time reviewing all that stuff you thought you learned back in highschool.

    Also, on long and tedious homework assignments that you already have a firm grasp on, a ti-89 will save your life. The 89 and calculators like it aren't generally allowed in class or on tests, for good reason, so if you do get one make sure you don't become dependent on it.
     
  12. Jan 15, 2010 #11
    I just bought the Ti-89 and I like the features in this gizmo, but I agree on "don't become dependent on it" because a calculator can hinder your math skills.
     
  13. Jan 15, 2010 #12
    Yeah, the TI-89 is pretty awesome, but it can easily become a crutch. Same with Wolfram|Alpha. I only use them to check my answers, or if I'm completely stumped, to give me an idea of either what to do next or what I should be aiming for (and then work a similar problem without!)

    If you don't already know about it, there's an AWESOME graphing program at www.geogebra.org. It's free (open source, actually), runs on anything that has Java installed, and very useful as a visual aid.
     
  14. Jan 15, 2010 #13
    Make sure to learn the concepts. If you know the concepts you can derive what you need at a later time. Understand the basics - what areas under a curve represent, what an integral is physically doing in terms of summation.

    In my experience becoming intimate with why your are doing something will wet your appetite for understanding how to do something, which will, in turn, increase your overall comprehension and memorization anyway - otherwise bring a pillow.
     
  15. Jan 17, 2010 #14
    Well, the first thing I'll say is don't be too reliant on a calculator. I wasn't permitted to use a calculator in any of my calculus classes, only for homework. This was kind of a rude awakening for me, so I try and warn every first year calc student that asks me about the course. Also, brush up on algebra mostly, the trig stuff will be heavier in calc II (most likely!) and calc I will deal in limits and derivatives mostly. This means getting good with your algebra. You probably won't see an integral until the last unit or so and than it will continue on into calc II from there, so don't worry so much about that now. Another thing that helped me a little bit was a computer program called Maple, my teacher actually recommended it to us, and provided us with a link so I don't know if it costs anything for individuals, but it was great for checking my mathematics and graphing functions and such. Read the book and most importantly practice problems daily. I was hesitant about calculus when I started too, but I absolutely loved it once the course got underway, so you may be surprised. Good luck.
     
  16. Jan 17, 2010 #15
    As far as a ti-89 I don't understand what good that does you in calculus. A calculator can do the easy parts, if you understand the problem well enough to put it into a ti-89 you are fine. Just take calculus as seriously as you can, its the last course you will take that will get you an easy A.
     
  17. Feb 1, 2010 #16
    I feel horrible today. I flunked the first calc. exam! It will be dropped, but I'm see a path of hardships. I did feel that i needed more practice, but on the calc. questions.
    I hate math questions! They are bunch of wordiness crap that I can never understand. I wish they were more specific on what they want me to find. I rather deal with numbers, graphs, and formulas.
     
    Last edited: Feb 1, 2010
  18. Feb 1, 2010 #17

    Dembadon

    User Avatar
    Gold Member

    Newton invented the calculus to help explain the concept of "speed" and "acceleration" at any given moment in time; therefore, one is going to have to become comfortable with word problems in calculus because they are inextricably attached at the hip. :biggrin:
     
  19. Feb 1, 2010 #18
    Sorry to hear about your angst. I'll offer up some advice though: First, don't worry so much about the wordiness of the problems. Looks for key words and terms that you know. A good trick I like to use when a wordy problem (in any subject) presents itself is to read the problem once, than a second time but cutting out the details. That way I'm left with only the actual question at hand. Second, when I took calculus I had to know the formulas very well. Now, I've heard of some Professors letting students have a "cheat sheet" with formuli on it but mine certainly didn't. So if you have to know the formulas the best advice I can give you is to write out the formula and the proof a few times, and memorize them like anything else. The formulas are the single most important part of calculus, if you don't know them you will most definitely fail. And third, ask your teacher for the correct answers to the exam and try and do the questions until you get them right. Extra help/tutoring may not be a bad idea also. Good luck and practice.
     
  20. Feb 1, 2010 #19
    As you do more math, you will discover that much of it is translating from English into mathematical objects. If you can't handle the translation, life will be hard. This is particularly true for applied math like Calc I, II and III.

    Practice practice practice. Just reading the textbook is never enough.

    Also:
    https://www.amazon.com/How-Solve-Mathematical-Princeton-Science/dp/069111966X
     
    Last edited by a moderator: May 4, 2017
  21. Feb 1, 2010 #20
    You are correct. I'm just in a panic mode right now because this will determine my goals as a theoretical physicist.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Advice on calc. 1
  1. Calc 1 (Replies: 21)

  2. Calc 1 woes (Replies: 10)

  3. Teaching myself Calc 1 (Replies: 11)

Loading...