Cartesian Equations

Question 0

Equation of a circle:

Answer 0

(x-a)^2 + (y-b)^2 = r^2

Question 1

Finding area under curve:

Answer 1

∫ y dx/dt dt

——–

Question 2

To obtain a cartesian equation from a parametric:

Answer 2

We must eliminate the parameter t.

Rearrange one equation to get t then sub this value into the other.