Recent content by Kuja

  1. K

    Integration of rational functions

    I got something like: 6x + 4 + In |x^2 + 2| + C x^2 + 2 which is nothing like: -x + 3 x^2 + 2
  2. K

    Integration of rational functions

    The problem is,I am in grade 12 and I have never done integration before (In fact, we are doing derivative right now) I am trying to check the derivative: x^2 - 6x - 2 (x^2 + 2)^2 that I got from: -x + 3 x^2 + 2 So I figure the anti-derivative (Integral) might be able to help me...
  3. K

    Integration of rational functions

    How do I solve the integration of a rational function such as: x^2 - 6x - 2 (x^2 + 2)^2 If possible, please list the general rule of solving, I DO NOT want the answer, I simply want to know the way of solving it. Thanks in advance! So far I got to the part where A = 1, B = -6 and...
  4. K

    Integration of rational functions

    How do I solve the integration of a rational function such as: x^2 - 6x - 2 (x^2 + 2)^2 If possible, please list the general rule of solving, I DO NOT want the answer, I simply want to know the way of solving it. Thanks in advance!
  5. K

    In how many ways to answer a true-false test with 6 questions

    O thank you! I don't know, but I just don't understand the concepts. I think I will read more.
  6. K

    In how many ways to answer a true-false test with 6 questions

    The question is as followed: In how many ways can a student answer a true-false test that has six questions? I tried nCr where n = 6 and r = 2 The result was 15, but at the back of the book it says 64! I am wondering where the number 64 come from. Thanks in advance!
  7. K

    Calc Question: Find Side Length of Cut Squares for 1575 cm^3 Box

    I need help on solving word problems fast. I can solve an algebra mathematical problem like 10X faster than I can solve word problems. Any tips? :smile:
  8. K

    Calc Question: Find Side Length of Cut Squares for 1575 cm^3 Box

    Well I found the equation to be (32-2x)(25-2x)x=1575 where x = 3.5 But still, if anyone can explain this problem in a more simple format, then I can ensure myself won't be stuck in one of these word problems, it really took me too long to figure this out. Thanks in advance!
  9. K

    Calc Question: Find Side Length of Cut Squares for 1575 cm^3 Box

    I know this is simple, but I don't understand the English of this problem: An open box, no more than 5 cm in height, is to be formed by cutting four identical squares from the corners of a sheet of metal 25 cm by 32 cm, and folding up the metal to form sides. The capacity of the box must be...
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