File:Vertlinetest.png
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Vertlinetest.png (200 × 200 pixels, file size: 3 KB, MIME type: image/png)
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An illustration of the vertical line test from (pre)calculus, created by me. --SpaceMoose 12:35, 14 Dec 2004 (UTC)
The expression shown here is an equation for a circle, as represented graphically, with centre as origin (0,0) and radius of 3 units. When a vertical line is drawn at x=1, the line intersects the circle at two points, thus defying the property that a function returns only one value as output for an input. Hence, this expression is not a function.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:32, 14 December 2004 | 200 × 200 (3 KB) | SpaceMoose (talk | contribs) | An illustration of the vertical line test from (pre)calculus, created by me |
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