This video shows how to determine the tangent line equation (tangent line approximation, linear approximation) for a given differential equation at a given initial value, and then how to use that equation to approximate the value of the function at a given x-value.
2018 AP Calculus AB Free Response Q6b No Calculator
This video shows how to determine the tangent line equation (tangent line approximation, linear approximation) for a given differential equation at a given initial value, and then how to use that equation to approximate the value of the function at a given x-value.