Find the limit of (3x^2 - 2x + 5)/(2x^2 + 3x - 4) as x approaches 1.
+
What is the amplitude and period of the cosine function f(x) = cos x? Does this function have any x-intercepts? When does f(x) reach its maximum and minimum values?
+
Question: What is the derivative of f(x) = sin(x) + cos(x) - tan(x) + sec(x) at x = π/4?