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Question
`int_"a"^"b" "f"(x) "d"x` = ______
Options
`int_"b"^"a" "f"(x) "d"x`
`- int_"a"^"b" "f"(x) "d"x`
`- int_"b"^"a" "f"(x) "d"x`
`int_0^"a" "f"(x) "d"x`
Solution
`- int_"b"^"a" "f"(x) "d"x`
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