Hi Show that the polar equation r= a cos x + b sin x where ab not equal 0 represents a circle and find its center and radius I really have no idea where to start - any ideas at all?? Thanks Struggling calculus beginner
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Hello, calcbeg! I must assume you know these conversions: . . Show that the polar equation: . .where represents a circle and find its center and radius. We have: . So we have: . Complete the square: . Simplify: . This is the equation of a circle: .
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