d/(dy)(cos(x)sin(y))

解答

\frac{d}{d y} (cos (x) sin (y))

cos (x) cos (y)

求解步骤

\frac{d}{d y} (cos (x) sin (y))

将

x

视为常数

将常数提出:

(a \cdot f)^{'} = a \cdot f^{'}

= cos (x) \frac{d}{d y} (sin (y))

使用常见微分定则:

\frac{d}{d y} (sin (y)) = cos (y)

= cos (x) cos (y)

d er i v a t i v e \frac{3}{sin ( x ) + cos ( x )}

i = 1 \sum \infty i^{4}

\frac{\partial}{\partial x} (3 x^{4} + 8 x^{3})

\frac{d}{d z} ((1 - y) z)

\frac{d y}{d x} = 3 y