面积 x^3-15x^2+50x,-x^3+15x^2-50x

解答

面积

x^{3} - 15 x^{2} + 50 x, - x^{3} + 15 x^{2} - 50 x

625

求解步骤

使用面积公式:

\int_{0}^{10} x^{3} - 15 x^{2} + 50 x - (- x^{3} + 15 x^{2} - 50 x) d x

解

\int_{0}^{10} x^{3} - 15 x^{2} + 50 x - (- x^{3} + 15 x^{2} - 50 x) d x : 625

面积为:

= 625

n = 0 \sum \infty \frac{1}{2 n + 3}

- 2 y^{^{'}} + 6 x^{2} = 0

\int \frac{- x ^{2} + x + 4}{x ( x - 2 ) ^{2}} d x

n = 1 \sum \infty ln (\frac{n + 1}{n})

9 y^{^{''}} - y = \frac{x e x}{3}