integration the question
S=symbol of integration
S ln(3+4x)dx
help me about maths
2009-11-19 11:55 pm
回答 (1)
2009-11-20 12:05 am
✔ 最佳答案
You gotta use integration by parts.S ln(3 + 4x) dx
= xln(3 + 4x) - S x d[ln(3 + 4x)]
= xln(3 + 4x) - S 4x/(3 + 4x) dx
= xln(3 + 4x) - S [1 - 3/(3 + 4x)]dx
= xln(3 + 4x) - x + 3/4 ln(3 + 4x) + C
= (x + 3/4)ln(3 + 4x) - x + C
參考: Physics king
收錄日期: 2021-04-19 20:39:32
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