面积 1390-34x,88x,[11.3934400000000…,12.3934400000000…]

解答

面积

1390 - 34 x, 88 x, [11.3934400000000 \dots, 12.3934400000000 \dots]

60.99968

求解步骤

使用面积公式:

\int_{11.39344 \dots}^{12.39344 \dots} ∣ 1390 - 122 x ∣ d x

解

\int_{11.39344 \dots}^{12.39344 \dots} ∣ 1390 - 122 x ∣ d x : 60.99968

面积为:

= 60.99968

\frac{\partial}{\partial x} (x y^{2} e^{y})

y^{^{''}} - 4 y^{^{'}} + 8 = 0

\int \frac{1}{1 + z ^{2}} d z

t^{2} y^{^{''}} + 13 t y^{^{'}} + 36 y = 0

9 y^{^{''}} - 60 y^{^{'}} + 51 y = 0, y (0) = 1, y^{^{'}} (0) = 0