dy :3(2x+1)sin(x2 +X+). Consider the differential equation dx 2 Part A: Find the equation of the line tangent to the solution curve at the point (0, 3). (5 points) Part B: Find the second derivative at (0, 3) and use it to determine the concavity of the solution curve at that point. Explain. (10 points) Part 0: Find the particular solution y = f(x) with initial condition f(0) = 3. (15 points)