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4)

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Step 1:

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The curve equations are \"image\" and \"image\".

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Graph the functions \"image\" and \"image\".

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Shade the required region.

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\"image\"

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Observe the graph :

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Region enclosed by the given curves is between \"image\" and \"image\".

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Step 2:

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Area between the curves \"\" and \"\" and between \"\" and \"\" is 

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\"\".

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Here \"image\" and \"image\".

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Area of the region , \"image\".

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\"image\"

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\"image\"

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\"image\"

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Area of the region is \"image\" sq-units.

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Solution:

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Area of the region is \"image\" sq-units.

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