1. Find an equation of the ellipse with the center (0,0) , vertical major axis 14 and minor axis 10.
2. Find an equation for the hyperbola with the focus (11,12) and asymptotes 4x-3y=18 and 4x+3y=30.
3. Find the arc length of the curve given by x = sin t - cos t, y = sin t + cos t, pi/1 <= t <= 3pi/4