find the area of the surface formed by revolving the gragh of y=x^2 on the interval[0,√2] about the y-axis and its length.
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※ 編輯: BIEGABOY 來自: 118.171.37.44 (06/05 12:03)
※ 編輯: BIEGABOY 來自: 118.171.37.44 (06/05 12:04)