MATH 241 Midterm: MATH241 Exam 1 Review

B)2 9 cos(t) _ cos(90 y = 9 sin(t)-sin(9t) 6 4 3 2 t 32 -1 0 12 3 F)2-3 sin(t) y = cos(t) 6 43 2

Evaluate (v 2 sin(x)) dx (z2 9 cos(y)) dy x3 dz where C is the curve r(t)-(sin(t), cos(t), sin(2t), o s t s 2π. (Hint: Observe that C lies on the surface z = 2xy.) Need Help? Talk to a Tutor Submit Answer Save Progress Practice Another Version

(1 point) Which of the following integrals represents the length of the parametric curve x = t + cos(t), y-1-sino. 0 2π, about the X-axis? 2.T A. 3 - sin(t) - cos(t) dt 0 2T B.V V4 - sin(t)-cos() dt 2x - 2 sin(t) - 2 cos(t) 2 - 2 sin(t) - 2 cos(t) dt V3 -2 sin(t) - 2 cos(t) dt dt け. 0 2π ゾ 申..潍n(n.esa@ di :::