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Question: really stuggling with a amp b i dont need plotting...

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f Find and plot following equations of the loci of z given by the following equations (for a z by circle indicate explicitly coordinates of its centre and radius, for an ellipse indicate explicitly coordinates of its foci and semi-axes; for a straight line indicate explicitly its gradient and y- intercept, for a ray indicate explicitly coordinates of its origin and gradient) 3-4 10

Really stuggling with A & B. I don't need plotting just wokring. I got for A: (z^2-2jz-1)/(SQRT(25)=5, where from here?

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