MATH138 Final: Parametrics

(1 pt) Given x = e^-t and y = te^7t, find the following derivatives as functions of t. dy/dx= d^2y/dx^2 =

8. Elim te the parameter to find a description of the following circle (or ina circular arc) in terms of x and y. Give the center and radius, and indicate the positive orientation. x =-10cos2t y-10sin2t

Find parametric equations representing the line segment joining P(-5, 4) to Q(3, -2) as where P= (x(0),y(0)), Q = (x(1),y(1)) and x(t), y(t) arc linear functions of t.