integral of-2cos(t)

解答

\int - 2 cos (t) d t

- 2 sin (t) + C

求解步骤

\int - 2 cos (t) d t

提出常数:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= - 2 \cdot \int cos (t) d t

使用积分常见定则:

\int cos (t) d t = sin (t)

= - 2 sin (t)

解答补常数

= - 2 sin (t) + C

t an g e n t f (x) = 8 4 x, at x = 1

\frac{d}{d x} ((3 x + 5)^{3} - 5 x)

\frac{\partial}{\partial x} (x e^{(\frac{y}{x})})

\int \frac{1}{cos ^{2} ( b ) x} d x

x \to 2 lim (- 5)