[考古] 高大96

[reideen107 (理想一直都在)]

7.Find  (b) ∫(x+4) / x(x-2)(x+5) dx


算出來是  -2lnx/3 + 3ln(x-2)/5 + ln(x+3)/15

答案對嗎？...不太會這種類型的題目@@



5.(a) Find the volume of the solid generated by revolving the region

between the y-axis and the curve x=2/y , 1≦y≦4 , about the y-axis.

  (b)The region in the first quadrant enclosed by the parabola y=x^2 ,

the y-axis and the line y=1 is revolved about the line x=3/2 to

generate a solid. Find the volume of the solid.


9.Find the area of the region that lies inside the circle r=1 and

outside the cardioid r=1-cosθ.



煩請各位大大幫忙講解..........感謝

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※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 118.171.123.171
推 ht15trep:(-2/5)lnx+(3/7)ln(x-2)+(-1/35)ln(x+5)+
→ ht15trep:C
→ ht15trep:ln裡要是絕對值才對，忘記加了= =