\n Definite integral of a function, say \\(f(x)\\), over a domain \\(x \\in [a, b]\\) represents the area\r\n under the curve representing \\(f(x)\\).\n
\r\n\r\nThe area under a curve can be approximated by adding the areas of rectangles.
\r\n\r\n\r\n This MagicGraph shows the curves representing function \\(f(x)\\) and its derivative \\(f'(x)\\).\r\n The bright RED point is a draggable point that can glide on the curve representing function \\(f(x)\\).\r\n Dragging the RED point will make the bright BLUE point glide along the curve representing \\(f'(x)\\).\r\n
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