2x2

Find the derivative of the function f(x) = cos(3x) - sin(4x) at x = π/6.

Math question: What is the limit of (2x^3 - 5x^2 + 3x + 1) / (x^2 - 4x + 3) as x approaches 3?

Math Question: Find the limit as x approaches infinity of (3x^2 + 5) / (2x^2 - 3).