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"if "f(x) ={ underset(5x, 1,2 le x le 3)...

`"if "f(x) ={ underset(5x, 1,2 le x le 3)(3x+4, 0 le x le 2}},` then evaluate `int_(0)^(3) f(x) dx.`

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The correct Answer is:
`(53)/(2)`
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