展开 ((\sqrt[3]{r}+1)^3)/(14\sqrt[4]{r)+1}

解答

展开

\frac{( 3 r + 1 ) ^{3}}{14 4 r + 1}

\frac{r + 3 r ^{\frac{2}{3}} + 3 3 r + 1}{14 4 r + 1}

求解步骤

\frac{( 3 r + 1 ) ^{3}}{14 4 r + 1}

(3 r + 1)^{3} = r + 3 r^{\frac{2}{3}} + 3 3 r + 1

= \frac{r + 3 r ^{\frac{2}{3}} + 3 3 r + 1}{14 4 r + 1}

e x p an d 15 (1 - e^{- 0.04 t})

\frac{d}{d t} ((θ) (2 e^{2 t} - 4 e^{3 t}))

e x p an d \frac{1}{s ^{2} ( s + 3 )}

e x p an d - (x^{3} + 3 y^{2}) d y

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