Problem 282. Circle and Quadratic

Created by Matt Fig

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Last Solution submitted on Jan 04, 2023

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Gunther S on 14 Feb 2012

the visualisation has an error, it should be

C = @(x) real(-sqrt(R^2-(x-T(1)).^2) + T(2)); % Lower half circle

Matt Fig on 16 Feb 2012

Thanks Gunther. The function does produce the correct graphic, but only when T(1)=0 as in my example.

Rafael S.T. Vieira on 9 Nov 2022

The third test is a pain. Why such a small circle for high precision? It's already a single-point tangent circle. It is no fun to look for the specific method the author had in mind when we already have the answer. IMHO, problems should be open; they accept all kinds of solutions (leaving people to explore clever ideas). Or they should be closed, and a specific method is requested (so people don't wander to dead ends). Precision should be a requirement only for closed ones.

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Problem 282. Circle and Quadratic

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