What is the limit, as x approaches 5, of (x^2 - 25)/(x - 5)?
+
What is the resultant displacement when a vector of magnitude 18 units, directed 30Β° east of north, is added to a vector of magnitude 24 units, directed 60Β° south of east?
+
Math Question: Find the derivative of f(x) = 3x^5 - 2x^3 + 4x^2 - 7x + 9.