What is the integral `int_2^8 e^(x - 1) dx`

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The integral `int_2^8 e^(x - 1) dx` has to be determined.

`int_2^8 e^(x - 1) dx`

= `int_2^8 (e^x)/(e^1) dx`

= `(1/e)*int_2^8 (e^x) dx`

= `(1/e)*[e^x]_2^8`

= `(1/e)*(e^8 - e^2)`

= `e^7 - e`

The integral ` int_2^8 e^(x - 1) dx = e^7 - e`

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