面积 2x^2,2x+6,-1.3,2.3

解答

面积

2 x^{2}, 2 x + 6, - 1.3, 2.3

15.624

求解步骤

使用面积公式:

\int_{- 1.3}^{2.3} 2 x^{2} - (2 x + 6) d x

解

\int_{- 1.3}^{2.3} 2 x^{2} - (2 x + 6) d x : 15.624

面积为:

= 15.624

in v erse l a pl a ce \frac{s}{s ^{2} + 10 s + 25}

x \to 0 lim (\frac{5}{x} - \frac{5}{x ^{2} + x})

t \to 1 lim (t + 3)

t an g e n t f (x) = 2 x^{2} - 5 x + 3

x \to 0 + lim (ln (1 + x))