Author Question: Describe the curve r(t) = (sin t) i + (cos t) j + k. (Read 71 times)

nautica902 · **on:** May 27, 2021

Question 1

What kind of curve is r(t) =

(sin t) i +

(sin t) j + 2(cos t) k?
◦ a circular helix
◦ a parabola
◦ a circle
◦ an ellipse (but not a circle)
◦ an oval plane curve that is, however, not an ellipse

Question 2

Describe the curve r(t) = (sin t) i + (cos t) j +

k.
◦ the circle (of radius 1) in which the plane z =

intersects the sphere x² + y² + z² = 4
◦ the circle (of radius

) in which the plane z = 1 intersects the sphere x² + y² + z² = 3
◦ a helix wound around the cylinder x² + y² = 3
◦ the circle (of radius

) in which the plane z =

intersects the cylinder x² + y² = 1
◦ a helix wound around the cylinder x² + y² = 1

ryansturges · **Reply #1 on:** May 27, 2021

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Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

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