作者announcer (announcer)
看板trans_math
标题[积分] 辛普森法应用
时间Fri Mar 30 22:45:29 2007
GENERAL:Suspension Bridge
The cable of a suspension bridge hangs in a parabolic curve.
The equation of the cable shown below is y = x^2/2000.
Its length in feet is given by the integral.
〔＿＿＿＿_____________________}
－４００ 0 ４００ x轴
400
∫ √1+ (x/1000)^2
-400
ꄊ
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