derivative 2sin(t)cos(t)

解答

导数

2 sin (t) cos (t)

cos (2 t) \cdot 2

求解步骤

\frac{d}{d t} (2 sin (t) cos (t))

化简

2 sin (t) cos (t) : sin (2 t)

= \frac{d}{d t} (sin (2 t))

使用连锁律:

cos (2 t) \frac{d}{d t} (2 t)

= cos (2 t) \frac{d}{d t} (2 t)

\frac{d}{d t} (2 t) = 2

= cos (2 t) \cdot 2

t an g e n t f (x) = \frac{5}{2 5 x + 6}, at a = 2

a re a y = \frac{x ^{3}}{9}, 0 \leq x \leq 2

t y^{^{'}} + 7 y = t^{2} - t + 1, y (1) = \frac{1}{7}

\int tan^{2} (d) x d x

\frac{d}{d x} (ln (x))