Math question: What is the smallest positive integer value for x, y, and z that satisfy the equation x^n + y^n = z^n, where n is an integer greater than 2?
+
What is the sum of the vectors v = (2, 5, -3) and u = (-1, 3, 4)?
+
Find the value of x in the interval [0, 2π) for which the cotangent function has a value of 1.