• 试题 ID 14474


设 $\left\{\begin{array}{l}x=5(t-\sin t) \\ y=5(1-\cos t)\end{array}\right.$ ,求 $\frac{\mathrm{d} y}{\mathrm{~d} x}, \frac{\mathrm{d}^2 y}{\mathrm{~d} x^2}$.
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