tui vừa giải dạng này xong....
....... ....
B= ∫dx.(x^6+x^5+x^4+2)/(x^6+1)
B= ∫dx.[1+x^5\(x^6+1) + (x^4+1)\(x^6+1)]
B= x + 1\6.ln|x^6+1| + A
A= ∫dx.(x^4+1)\(x^6+1)
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tui vừa giải dạng này xong....
....... ....
B= ∫dx.(x^6+x^5+x^4+2)/(x^6+1)
B= ∫dx.[1+x^5\(x^6+1) + (x^4+1)\(x^6+1)]
B= x + 1\6.ln|x^6+1| + A
A= ∫dx.(x^4+1)\(x^6+1)
http://vn.answers.yahoo.com/question/index;_ylt=At...