Recent content by john425

  1. J

    Finding the Matrix Transformation for Averaging Previous Elements in a Series

    Here is a PDF link with same exact question (#6): http://www.math.montana.edu/~shaw/math_221/archive/takeHome3.pdf
  2. J

    Finding the Matrix Transformation for Averaging Previous Elements in a Series

    Here it is exactly: Formulate the following problems in Matrix-difference equation xn+1 = Axn and specify the components of x (2) Each number is the average of the two previous numbers.
  3. J

    Finding the Matrix Transformation for Averaging Previous Elements in a Series

    Problem: Each number is the average of the previous two numbers. I am guessing I need to find a matrix A that when multiplied by a vector x, it will return another vector with its entries as the averages. Is this correct? Need some hints on how to start this one.
  4. J

    Rewriting Complex Trigonometric Expressions: Help Needed

    I just need help with the algebra, if my substitutions are correct
  5. J

    Rewriting Complex Trigonometric Expressions: Help Needed

    I am trying to rewrite -i arctan ix = arctanh x + c as e^it = cos t + i sin t I am having trouble rewriting sqrt[ 1 + i tan t / 1 - i tan t] as cos t + i sin t Is this possible or did I do something wrong? What do I multiply the sqrts by.
  6. J

    How Do You Integrate 1/x^(1+a)?

    Thank You!
  7. J

    How Do You Integrate 1/x^(1+a)?

    Oh I see now I got -(x^-a/a) is this correct?
  8. J

    How Do You Integrate 1/x^(1+a)?

    I need help getting the integral of 1/x^(1+a) I tried using substitution but it didnt work. I keep getting x/a. Could someone show me what I am doing wrong.
  9. J

    Solving 24 cosh x + 16 sinh x = 2500

    I am having trouble solving for x 24 cosh x + 16 sinh x = 2500 do I multiply out all the (e)s?
  10. J

    Solving Closest Values of x to Zero: Formula to Make it Easy

    Oh yea! I just forgot! Thank you!
  11. J

    Solving Closest Values of x to Zero: Formula to Make it Easy

    I am having trouble solving for the two values of (x) that are closest to zero. -30 sin 3x = 1/10 cos 3x Is there a formula I could use to make this easy?
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