A point moves along thex-axis, with its position,x, at timet> 0 given by

x(t) =t3 6t2+ 9t+ 1.For which of the following values oftis the point moving to the left?

Select one:

a. 0 <t< 1

b. 1 <t< 3

c.t> 3

d.t> 0

Find all points on the curve ln (xy) =x2where the tangent lines are vertical.

Select one:

a. None of the tangent lines are vertical.

b. (0, 0)

c. (0, 1)

d. (1, 0)