展开 18(9/44+(3ln(11/8))/4)

解答

展开

18 (\frac{9}{44} + \frac{3 ln ( \frac{11}{8} )}{4})

\frac{81}{22} + \frac{27 ln ( \frac{11}{8} )}{2}

十进制

7.98094 \dots

求解步骤

18 (\frac{9}{44} + \frac{3 ln ( \frac{11}{8} )}{4})

使用分配律:

a (b + c) = ab + a c

a = 18, b = \frac{9}{44}, c = \frac{3 ln ( \frac{11}{8} )}{4}

= 18 \cdot \frac{9}{44} + 18 \cdot \frac{3 ln ( \frac{11}{8} )}{4}

化简

18 \cdot \frac{9}{44} + 18 \cdot \frac{3 ln ( \frac{11}{8} )}{4} : \frac{81}{22} + \frac{27 ln ( \frac{11}{8} )}{2}

= \frac{81}{22} + \frac{27 ln ( \frac{11}{8} )}{2}

e x p an d 5 \cdot (\frac{π}{4} + 2 π)

s im pl i f y (s + \frac{b}{m}) (s + \frac{r}{l})

e x p an d (20 - e^{0.05 x}) x

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

e x p an d [(- 30 x^{2} - 3 x) e^{- 5 x}] d x