Consider the following statements:

Which of the statements given above are correct?

Find $$\frac{dy}{dx}$$​ given the following implicit equation: $$x^2+y^2=a^2$$

The derivative of the function $$f(x)=-3x^2+6x-4$$​ is given by:

Differentiate $$f(x)$$​ = cos(tan $$3x$$​) + sin(tan $$3x$$).

Find the value of dy/dx if $$x=cost,y=sint$$​.