求详细解答过程 最好手写

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求详细解答过程最好手写求详细解答过程最好手写求详细解答过程最好手写x-y+siny/2=0一阶导数1-dy/dx+(cosy/2)dy/dx/2=01-dy/dx+(cosy/4)dy/dx=0dy/

求详细解答过程 最好手写
求详细解答过程 最好手写

求详细解答过程 最好手写
x - y + siny / 2 = 0
一阶导数
1 - dy/dx + (cosy / 2) dy/dx / 2 = 0
1 - dy/dx + (cosy / 4) dy/dx = 0
dy/dx [ 1 + (cosy / 4)] = 1
dy/dx = 1 / [ 1 + (cosy / 4)]
二阶导数
- d²y/d²x - (siny / 4) dy/dx + (cosy / 4) d²y/d²x = 0
d²y/d²x + (siny / 4) dy/dx - (cosy / 4) d²y/d²x = 0
d²y/d²x (1 - cosy /4) + (siny / 4) dy/dx = 0
d²y/d²x (1 - cosy /4)
= - (siny / 4) dy/dx
= - (siny / 4) / [ 1 + (cosy / 4)]
= - siny / ( 4 + cosy)