Eroxl's Notes
Midterm 1 - MATH 317 (2014T2)

Problem 1

Consider the curve parameterized by the vector function

(a). Find a Surface on Which the Parameterized Curve Lives and Sketch the Curve and the Surface in the Space below

The curve is a helix which lies on the cone .

(b). Find . You Must Simplify Your Answer to Get Credit for This Problem there Should Be no Sines or Cosines in Your Answer

(c). Find , where is Arc Length

(d). Find

(e). Find

(f). Find

(g). Deduce from the above Answers what is (hint: Use the Decomposition of Acceleration into Normal and Tangential components)

(h). Find the Equation of the Osculating Plane at

Problem 2

Suppose that is a vector valued function with and where and are some constants. Compute the quantity . Your answer should be expressed solely in terms of and (hint: it helps to draw a picture of the vectors , , and for some fixed value of ).

Problem 3

Let , be a parameterized curve. Re-parameterize the curve by arc length beginning at the point and going in the positive direction. Geometrically describe this curve.

The curve parameterized by arc length represents a curve passing through in the direction of