(\partial)/(\partial x)(tan^2(x+y))

解答

\frac{\partial}{\partial x} (tan^{2} (x + y))

2 tan (x + y) sec^{2} (x + y)

求解步骤

\frac{\partial}{\partial x} (tan^{2} (x + y))

将

y

视为常数

使用连锁律:

2 tan (x + y) \frac{\partial}{\partial x} (tan (x + y))

= 2 tan (x + y) \frac{\partial}{\partial x} (tan (x + y))

\frac{\partial}{\partial x} (tan (x + y)) = sec^{2} (x + y)

= 2 tan (x + y) sec^{2} (x + y)

\int - 9.8 t d t

n = 0 \sum \infty (\frac{5}{2})^{n}

n = 1 \sum \infty \frac{1}{3 ^{n} + 5}

\frac{\partial}{\partial x} (2 x + 4 y)

n = 1 \sum \infty \frac{6}{π \cdot n}