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In mathematics, the vertical line test is a visual way to determine if a curve is a graph of a function or not. A function can only have one output, y , for each unique input, x . If a vertical line intersects a curve on an xy -plane more than once then for one value of x the curve has more than one value of y , and so, the curve does not ...
Test of vertical wavy line with specified dimensions. Converted from the following vector PostScript source code: <pre>%! 10 setlinewidth 20 0 moveto 0 30 -10 45 -10 ...
In general, implicit curves fail the vertical line test (meaning that some values of x are associated with more than one value of y) and so are not necessarily graphs of functions. However, the implicit function theorem gives conditions under which an implicit curve locally is given by the graph of a function (so in particular it has no self ...
The paper for cursive writing uses pairs of lines 4 mm apart, with 8 mm between the pairs. They may also have angled lines at 65 degrees to vertical to provide additional guidance. The lines can have gray, blue, green, or purple colour. The vertical margin line must have a red or orange color. Vertical margin is optional for graph-ruled notebooks.
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4 Horizontal line test for quadrilaterals. 1 comment. 5 potentially merging Horizontal line test and Vertical line test into monotonicity? 9 comments.