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求3 4 曲線長度

((( 本即肖恩///
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13.4.9. 求曲線在指定範圍中的長度
(1) y=xi, x = 0, x = 1 (c0=1
(2) y = x3, x = 0, x=1
(3) y = e", x = 0, x = 1 (4) y = 1, 1 = -1, 1 = 1
y
= , x=1
(Hint: (1) (2)互為反函數.)
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