What is the 4th derivative of the function f(x) = 3x^5 + 2x^3 - 4x^2 + 6x - 1?
+
Find the equation of a hyperbola with foci at (-3,0) and (3,0), and the distance between any point on the hyperbola and its corresponding directrix is 5.
+
What is the measure of angle AOB if angle AOC measures 70 degrees and angle COB measures 110 degrees?