化简 sqrt(x)+1/(x^2)+x^3

解答

化简

x + \frac{1}{x ^{2}} + x^{3}

\frac{x x ^{2} + 1 + x ^{5}}{x ^{2}}

求解步骤

x + \frac{1}{x ^{2}} + x^{3}

将

x

转换为分数

: \frac{x x ^{2}}{x ^{2}}

将

x^{3}

转换为分数

: \frac{x ^{5}}{x ^{2}}

= \frac{x x ^{2}}{x ^{2}} + \frac{1}{x ^{2}} + \frac{x ^{5}}{x ^{2}}

使用分式法则:

\frac{a}{c} + \frac{b}{c} = \frac{a + b}{c}

= \frac{x x ^{2} + 1 + x ^{5}}{x ^{2}}

\int 5 e^{- 2 x} + 4 d x

6 \frac{d y}{d x} - y^{2} = 0

l a pl a ce t r an s f or m 2 cos (t)

2 x^{2} y^{^{''}} + 5 x y^{^{'}} + y = x^{2} - x

in v erse l a pl a ce \frac{s}{( s ^{2} + 2 s + 2 )}