Real Function Range Computation 

Use FunctionRange to compute the range of real functions.

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X FunctionRange[x^2, x, y]

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Find the range of .

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X FunctionRange[Sin[x^3]/x, x, y]

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Find the image of the unit disk through the mapping .

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X FunctionRange[{{x + y, x y}, x^2 + y^2 <= 1}, {x, y}, {u, v}]

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X FunctionRange[{{x + y, x y}, x^2 + y^2 <= 1}, {x, y}, {u, v}]; RegionPlot[%, {u, -1.5, 1.5}, {v, -1, 1}, PlotPoints -> 100]

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