Math

posted by Dave

Evaluate the integral of (x^3 + x^4*tanx) from [-pi/4, pi/4]

How do we know which one to let equal to u in order to start this whole process?

The answer in the book is 0.

  1. Steve

    I suspect a typo. That integral is not solvable using elementary functions.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. calculus

    evaluate integral or state that it is diverges integral -oo, -2 [2/(x^2-1)] dx ----------------------------------- integral -oo, -2 [2/(x^2-1)] dx Through partial fractions, I came up with lim [ln(x-1)-ln(x+1)] b, -2 b->-oo I get …
  2. Calculus

    assume the rate at which the world's oil is being consumed is r = 27 e^0.06 t. Here, just as in your book, r is in billions of barrels per year, t is in years, and t = 0 is January 1, 1990. (a) Fill in the blanks below to express the …
  3. integral Calculus

    ʃ (4sin²x cos²×/sin2x cos2x)dx i've got it from the book and it has an answer from the back page of the book but i want to know how to solve it..i really need it for practicing this subject...please please help..Thanks a lot.. …
  4. Calc

    Hello im trying to integrate tan^3 dx i have solved out the whole thing but it doesnt match up with the solution.. this is what i did: first i broke it up into: integral tan^2x (tanx) dx integral (sec^2x-1)(tanx) dx then i did a u …
  5. Calc

    Hello im trying to integrate tan^3 dx i have solved out the whole thing but it doesnt match up with the solution.. this is what i did: first i broke it up into: integral tan^2x (tanx) dx integral (sec^2x-1)(tanx) dx then i did a u …
  6. Calc

    Evaluate the integral using any method: (Integral)sec^3x/tanx dx I started it out and got secx(1tan^2x)/tanx. I know I just have to continue simplifying and finding the integral, but I'm stuck on the next couple of steps. Also, I have …
  7. Math

    I can't find the integral for (tanx)^(6)*(secx)^(2) I tried splitting up tanx into (tanx)^2*(tanx)^4 and let the latter equal (secx)^2 - 1. Please help, thanks!
  8. Math

    Evaluate the integral of (secx)^2 * (tanx)^3 *dx I started out with letting u=secx and du=secx*tanx*dx , but then I am kind of stuck because I don't know how to factor out just secx*tanx?
  9. Math

    Evaluate the integral of x * sqrt(x-1) from [1,2]. I let u=x-1 and du=1*dx, but then I can't get rid of the x to start integrating?
  10. Math

    Evaluate the integral of (e^z + 1)/(e^z + z) from [0, 1] How do you know what to let equal to u to start this process?

More Similar Questions