Автор - uhkbfhv

Помогите пожалуйста!!!
Цифры на чертеже - 8 и -3​

Ответ

Автор - dubinushka24

 int_{-8}^{-3} f(x) dx = F(x)|_{-8}^{-3} =

 = (-frac{x^3}{5} - frac{39cdot x^2}{10} - 24x - frac{7}{6})|_{-8}^{-3}=

 = frac{27}{5} - frac{39cdot 9}{10} - 24cdot (-3) - frac{7}{6} -

 - (frac{8^3}{5} - frac{39cdot 64}{10} - 24cdot (-8) - frac{7}{6}) =

 = frac{27 - 512}{5} + frac{39cdot (64 -9)}{10} + 24cdot (3-8) =

 = -frac{485}{5} + frac{39cdot 55}{10} + 24cdot (-5) =

 = -97 + frac{39cdot 11}{2} - 120 = -217 + frac{429}{2} =

 = -217 + 214,5 = - (17 - 14,5) = -2,5

Ответ. 2,5.

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