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sat_chen

  • 3 years ago

am i doing this integration right? ( wait like 2 min to draw my problem and solution steps) thanks

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  1. sat_chen
    • 3 years ago
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    |dw:1359158701050:dw|

  2. sat_chen
    • 3 years ago
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    |dw:1359158759022:dw|

  3. sat_chen
    • 3 years ago
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    |dw:1359158787925:dw|

  4. sat_chen
    • 3 years ago
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    |dw:1359158816420:dw|

  5. sat_chen
    • 3 years ago
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    is that right sorry couldnt think of a better way

  6. incomplte
    • 3 years ago
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    Looks good to me

  7. sat_chen
    • 3 years ago
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    last problem before im done for the week so can someone else verify ty

  8. sat_chen
    • 3 years ago
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    not that i dont respect you incompite :P

  9. abb0t
    • 3 years ago
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    You could of separated it from the beginning first: \[\int\limits \frac{ \sec^2(x) }{ \tan^2(x) }dx - \int\limits \frac{ 1 }{ \tan^2(x) }dx \] use u-substitution: u = tan(x) du = sec^2(x) \[\int\limits \frac{ 1 }{ u^2 }du - \int\limits \frac{ 1 }{ \tan^2(x) }dx\] and you know: \[\frac{ 1 }{ \tan^2(x) }= \frac{ 1 }{ \frac{ \sin^2(x) }{ \cos^2(x) } } = \frac{ \cos^2(x) }{ \sin^2(x) }= \cot^2(x)\] proceed: \[\int\limits \cot^2(x)dx = -x-\cot(x)+C\] PUT EVERYTHING TOGETHER: \[-\frac{ 1 }{ \tan(x) }-(-x-\cot(x))+C\]

  10. incomplte
    • 3 years ago
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    You got the questions wrong @abb0t . Its tan/sec not the other way around

  11. sat_chen
    • 3 years ago
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    you did the question wrong

  12. abb0t
    • 3 years ago
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    omg. Lol. fudge.

  13. sat_chen
    • 3 years ago
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    well sorry for making you waste so much time :(

  14. sat_chen
    • 3 years ago
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    so was i right abb0t

  15. sat_chen
    • 3 years ago
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    i feel really bad for making you take so long and you got the question wrong really sorry next time ill make iit more clear :(

  16. incomplte
    • 3 years ago
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    lol im pretty sure it is

  17. abb0t
    • 3 years ago
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    mmk.

  18. incomplte
    • 3 years ago
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    The int of sec^2 is tan. You dont need any other steps to compute that.

  19. sat_chen
    • 3 years ago
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    the sec^2x cancel out leaving 2/sec^2x which is 2ln(tanx) right

  20. incomplte
    • 3 years ago
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    you cant just throw the 1 away. Its 1, not 0

  21. abb0t
    • 3 years ago
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    am i looking @ the wrong question?! LOL

  22. sat_chen
    • 3 years ago
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    |dw:1359159907953:dw|

  23. sat_chen
    • 3 years ago
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    heres the question again

  24. sat_chen
    • 3 years ago
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    yea i do believe its right ty guys i feel bad for ab0t all that work :(

  25. incomplte
    • 3 years ago
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    If your professors says its wrong, request to see where they got their degree from lol

  26. sat_chen
    • 3 years ago
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    my professor is a smart dude hes got masters at 21 so ill believe him if he says im wrong XD

  27. abb0t
    • 3 years ago
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    lol. whoa watch out, we got a bada_ _!! JK he's human and still susceptible to mistakes.

  28. incomplte
    • 3 years ago
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    Well im 4 months away too, in electrical engineering to be precise.

  29. sat_chen
    • 3 years ago
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    me too woot

  30. sat_chen
    • 3 years ago
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    im also ece

  31. sat_chen
    • 3 years ago
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    but im second year 19 so if i try hard enough i may get done by 21

  32. abb0t
    • 3 years ago
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    i'm abt 2 graduate 8th grade.

  33. sat_chen
    • 3 years ago
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    avoided math as much as i could :P

  34. incomplte
    • 3 years ago
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    hahahhaa

  35. sat_chen
    • 3 years ago
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    yea right abo0t

  36. incomplte
    • 3 years ago
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    You prolly still have to take diffe eq, multi variate and statistics then. Good luck lol

  37. abb0t
    • 3 years ago
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    Don't forget Linear Algebra.

  38. incomplte
    • 3 years ago
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    So smart for someone who is in 8th grade

  39. sat_chen
    • 3 years ago
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    yea i do and i hate math so not the best major for me XD

  40. sat_chen
    • 3 years ago
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    i found abb0t secret http://www.youtube.com/watch?v=lXp7Ta1UmQA

  41. sat_chen
    • 3 years ago
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    hest that dude right there

  42. abb0t
    • 3 years ago
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    omg. lol. i was guessing. geezbus. Lol

  43. incomplte
    • 3 years ago
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    Dont give up though, the degree is hot cake once you graduate. I promise

  44. sat_chen
    • 3 years ago
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    i know thats why im keeping at it

  45. sat_chen
    • 3 years ago
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    and i know some people that got direct to intel from here for 100k + so im gonna work my retriceoff

  46. sat_chen
    • 3 years ago
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    butt off*

  47. sat_chen
    • 3 years ago
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    and hes 21 as well so should be a good life from then on :P

  48. incomplte
    • 3 years ago
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    And that youtube guy is on a whole different level. As long as he can spit off derivatives and int from his head when he turns 18, otherwise he will be that one yotube guy

  49. sat_chen
    • 3 years ago
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    that was just a quick google search btw so im sure there are more genious of abb0t level ;)

  50. incomplte
    • 3 years ago
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    haha bye all

  51. sat_chen
    • 3 years ago
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    u in us by the way

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