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x=4 cost, y= 2 sint

  1. Could someone please check my work on the following problems? I want to be sure that I'm doing them correctly; i'm just required
    1. answers icon 1 answer
    2. Joesph asked by Joesph
    3. views icon 590 views
  2. Can somebody explain how the derivative of (cost-sint)i and (cost+sint)j equal -2sinti and 2costj. Should it be (-sint-cost)i
    1. answers icon 1 answer
    2. Anonymous asked by Anonymous
    3. views icon 498 views
  3. Q.NO.4: Find the arc length of the graph of r(t).r(t)=(t^2)i +(cost + t sint)j +(sint- t cost)k , 0≤t≤π
    1. answers icon 2 answers
    2. akash asked by akash
    3. views icon 677 views
  4. find an equation to the curve at the point corresponding to the given value of the parameter.x = tcost y = tsint when t = π i
    1. answers icon 1 answer
    2. Hanky asked by Hanky
    3. views icon 708 views
  5. Find dy/dx if y=cost, x=sint
    1. answers icon 3 answers
    2. Sinachi asked by Sinachi
    3. views icon 239 views
  6. What is the limit as t approaches 0 for (sint)/(1+cost)?
    1. answers icon 0 answers
    2. Kourt asked by Kourt
    3. views icon 523 views
  7. What is the limit as t approaches 0 for (sint)/(1+cost)?
    1. answers icon 2 answers
    2. Matt asked by Matt
    3. views icon 423 views
  8. Find an arc length parametrization of r(t) = ⟨e^(t)sint, e^(t)cost, 8e^(t)⟩
    1. answers icon 0 answers
    2. EKM asked by EKM
    3. views icon 542 views
  9. How do you differentiate sin^2(cos t)My work: =2sin(cos)(cost)(-sint)
    1. answers icon 1 answer
    2. Nora asked by Nora
    3. views icon 617 views
  10. circle x^2 +y^2 = 1.r(t) = (sint)i +(cost)j at both pi/4 and pi/2 Find velocity & acceleration Thx!
    1. answers icon 1 answer
    2. Jaime asked by Jaime
    3. views icon 548 views