求导 y=(x^2-3x+2)sinx

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求导 y=(x^2-3x+2)sinx
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求导 y=(x^2-3x+2)sinx
求导 y=(x^2-3x+2)sinx

求导 y=(x^2-3x+2)sinx
y'=(x^2-3x+2)'sinx+(x^2-3x+2)(sinx)'
=(2x-3)*sinx+(x^2-3x+2)cosx

设数列{an},根据下列条件,求a11.
1.a1=5,an+1=an+(4n+1)
2.a1=1,an+1=an+1/3
3.a1=1,an+1=√(an)^2+1
4.a1=2,an+1=3an+1
5.a1=2,an+1=((n+1)/(n+2))*an
补充 - 2008-09-23 20:25:24
希望高手能写出详细过程,谢谢<...

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设数列{an},根据下列条件,求a11.
1.a1=5,an+1=an+(4n+1)
2.a1=1,an+1=an+1/3
3.a1=1,an+1=√(an)^2+1
4.a1=2,an+1=3an+1
5.a1=2,an+1=((n+1)/(n+2))*an
补充 - 2008-09-23 20:25:24
希望高手能写出详细过程,谢谢
补充 - 2008-09-23 20:25:33
希望高手能写出详细过程,谢谢
2008-09-23 20:10:47 - 3个回答 - 40 - 检举

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