展开 5sin(0.5(x+22.93119))+8

解答

展开

5 sin (0.5 (x + 22.93119)) + 8

2.26452 \dots sin (0.5 x) - 4.45779 \dots cos (0.5 x) + 8

求解步骤

5 sin (0.5 (x + 22.93119)) + 8

5 sin (0.5 (x + 22.93119)) = 5 (0.45290 \dots sin (0.5 x) - 0.89155 \dots cos (0.5 x))

= 5 (0.45290 \dots sin (0.5 x) - 0.89155 \dots cos (0.5 x)) + 8

乘开

5 (0.45290 \dots sin (0.5 x) - 0.89155 \dots cos (0.5 x)) : 2.26452 \dots sin (0.5 x) - 4.45779 \dots cos (0.5 x)

= 2.26452 \dots sin (0.5 x) - 4.45779 \dots cos (0.5 x) + 8

e x p an d 6 4^{2} \cdot 8^{4}

e x p an d \frac{( x + 2 ) ( x - 2 )}{( 2 x + 7 ) x ^{4}}

e x p an d (3 + 14 π)^{2}

e x p an d (x + 1) ln (x + 1) - x

e x p an d e^{t} \cdot u (t - \frac{1}{2})