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Section 9.1 38. Find all points of intersection of the two

Can someone please help me with the attached Cal 2 math problems. Need help on those


Section 9.1



38. Find all points of intersection of the two curves.






x t2


y t 1









x 2 s


y 1 s



Section 9.2



10. Identify all points at which the curve has (a) a horizontal tangent and (b) a vertical








x cos 2t


y sin 7t



16. Given the parametric equations for the position of an object, find the object?s velocity


and speed at the given times and describe its motion.






x 2sin 2t


y 3cos 2t



WA 5, p. 1



(a) t = 0?(b)



t 2



Section 9.3



10. (a) Show that the curve starts at the origin at t = 0 and reaches the point (?, 2) at t = 1.


(b) Use the time formula (3.2) to determine how long it would take a skier to take the


given path. (c) Find the slope at the origin and the arc length for the curve.






x t


y 24 t



14. Compute the surface area of the surface obtained by revolving the given curve about


the indicated axis.






x t 2 1


y t 3 4t



WA 5, p. 2






0t 2



(a) about the x-axis



(b) about x = 3




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