Long description: d3

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A diagram showing a grid with marked points and dashed lines illustrating the stencil for a numerical method.

Alt text: A diagram showing a grid with marked points and dashed lines illustrating the stencil for a numerical method.

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  • The image displays a two-dimensional coordinate system with horizontal and vertical axes labeled with \(x\) and \(y\), respectively.
  • A rectangular grid is drawn, representing discrete points.
  • Several points are marked with solid black circles at the intersections of the grid lines.
  • Three distinct horizontal dashed lines are drawn, connecting three points in the center row, suggesting a discrete line segment or stencil.
  • Three distinct vertical dashed lines are drawn, connecting three points in the central column, also suggesting a discrete line segment or stencil.
  • The overall arrangement visualizes a finite difference stencil on a grid, where the spacing in the \(y\)-direction is labeled as \(h\) on the right side of the figure.

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