展开 sin(2)(x-pi/4)

解答

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sin (2) (x - \frac{π}{4})

sin (2) x - \frac{π}{4} sin (2)

求解步骤

sin (2) (x - \frac{π}{4})

使用分配律:

a (b - c) = ab - a c

a = sin (2), b = x, c = \frac{π}{4}

= sin (2) x - sin (2) \frac{π}{4}

= sin (2) x - \frac{π}{4} sin (2)

e x p an d (e^{4 x}) (x^{3} - x)

e x p an d \frac{( z - 1 ) ( 2 z - 1 )}{2}

e x p an d (3 x + 4 y = - 2, 3) (2 y - x = - 19)

e x p an d \frac{k}{x ( x + 2 k )}

e x p an d lo g_{2} (8)