展开 3sin(1)(x-pi/4)

解答

展开

3 sin (1) (x - \frac{π}{4})

3 sin (1) x - \frac{3 π}{4} sin (1)

求解步骤

3 sin (1) (x - \frac{π}{4})

使用分配律:

a (b - c) = ab - a c

a = 3 sin (1), b = x, c = \frac{π}{4}

= 3 sin (1) x - 3 sin (1) \frac{π}{4}

= 3 sin (1) x - 3 \cdot \frac{π}{4} sin (1)

乘

3 \cdot \frac{π}{4} sin (1) : \frac{3 π}{4} sin (1)

= 3 sin (1) x - \frac{3 π}{4} sin (1)

s im pl i f y 12 (\frac{a}{3} - \frac{b}{6})

s im pl i f y (3 x + 8) (7 x - 1)

e x p an d (c, d) - (c + a, d + b)

\frac{d ^{2}}{d x ^{2}} ((y) (cos (x) - sin (x)))

e x p an d (- 7 - 3) (- 7 + 2)