This equation is the same as the general equation of a circle, it's just written in a different form. Example Find the equation of the circle with centre \((2, - 3)\) and radius \(\sqrt 7\).

Other graphs - OCR The equation of the tangent to a circle - Higher The most commonly occurring graphs are quadratic, cubic, reciprocal, exponential and circle graphs. Their equations can be used ...

So, for example, if you write an equation like z=sin(x^2 + y^2), you'll get a ripple graph. To use the feature, write or type an equation and then tap on one of the variables and choose the Insert ...