Find an equation of the tangent plane to the surface represented by the vector-valued function at the given point. r(u, v) = wi + vi + Wuvk, (1, 1, 1) 2 1 (1, 1, 1 ) Need Help? Read It /1 Points] DETAILS LARCALC12 15.5.039. Find the area of the surface over the given region. Use a computer algebra system to verify your results. r ( u, v) = 4ui - vj + vk, 0 s us 4, 0s vs2 Need Help? Read It Watch It /1 Points] DETAILS LARCALC12 15.5.040.MI. Find the area of the surface over the given region. Use a computer algebra system to verify your results. r(u, v) = Zu cos(v)i + 2u sin(v)j + uck, Osus2, Osvs2n