Help, need all of these done with all steps

1. Find the length of the curve y =1+x2, 0

l. Find the length ofthe curve 3 1+x, o s x Sl 2. Find the area of the surface obtained by rotating the curve about the y-axis. 3. Find the area of the surface obtained by rotating the curve about the x-axis 3 4. Solve the differential equation (ey I)y' 2 cos(x) = 0 5. Solve the differential equation xyy