A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

How do you find the differential of the integral cos^3(x) dx from -9ts to -5t+6s?

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\int\limits_{-9ts}^{-5t+6s}\cos ^{3}(x) dx\]

  2. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ummmm......... i dont really know...

  3. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i spose its possible, just use those"equations" as the F(x) stuff in the end

  4. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you might want to go about "reducing" the integrand to an addition of sin and cos....maybe

  5. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    cos cos^2 cos(1-sin^2) cos(x)(1 - (1-cos(2x)/2)) ... along those lines eh?

  6. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah thats what i was going to say

  7. amistre64
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    well say it again then :)

  8. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    integral of sin^2 is known as -x/2 + sincos/2 so you could use that

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Well I have notes and an example problem, but it doesnt really make sense. He has the differential of the integral e^-x^2 from a to b. He then takes partials. Fa = -e^a^2 and Fb = e^b^2. Then apparently the differential is -e^a^2 * da + e^b^2 * db. No sense.

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Don't worry about it, I just wondered if anyone could make sense out of it, but obviously my teacher is drunk. He wrote his own "textbook" in Mathematica and he didn't do a very good job.

  11. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    are you still talking about integral of cos^3? anyway yeah there are no elementary functions to describe integral of e^(-x^2).

  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.