CIE A Level Maths: Pure 1复习笔记2.2.2 Finding the Centre & Radius
Finding the Centre & Radius
How can I find the centre and radius from any form of the equation of a circle?
- A circle equation in a different form can always be rearranged into (x- a)2 + (y - b)2 = r2 form in order to find the centre and radius
- This will often involve completing the square
Exam Tip
Worked Example
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