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