MCQ
`int ("e"^(7logx) - "e"^(6logx))/("e"^(5logx) - "e"^(4logx)) "d"x` = ______.
- A`3/x^3 + "c"`
- B`x^3log x + "c"`
- ✓`x^3/3 + "c"`
- D`1/x + "c"`
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