Find the gradient of the curve \(x^2+y^2=4\) at the following three points.

What is the derivative, \(\dfrac{dy}{dx}\), at a general point on the curve?

Find the gradient of the curve \(x^2+y^2=4\) at the following three points.

What is the derivative, \(\dfrac{dy}{dx}\), at a general point on the curve?