题目
12.已知y-varepsilonsin y-x=0(0A. 1+varepsiloncos yB. (1)/(1-varepsiloncos y)C. 1-varepsiloncos yD. (1)/(1+varepsiloncos y)
12.已知$y-\varepsilon\sin y-x=0(0<\varepsilon<1)$，则$\frac{dy}{dx}=$()
A. 1+$\varepsilon\cos y$
B. $\frac{1}{1-\varepsilon\cos y}$
C. 1-$\varepsilon\cos y$
D. $\frac{1}{1+\varepsilon\cos y}$
题目解答
答案
B. $\frac{1}{1-\varepsilon\cos y}$