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Автор - ruslankanzafar

Найти неопределенные интегралы способом подстановки  intlimits^a_b {10t* sqrt{t^2-3} } , dt

Ответ

Проверено экспертом

Автор - bearcab
Это определенный интеграл: есть пределы интегрирования.

 intlimits^a_b {10t* sqrt{t^2-3} } , dt = intlimits^a_b {5 sqrt{t^2-3} } , d(t^2)=

5intlimits^a_b {sqrt{t^2-3} } , d(t^2-3)= frac{5*2}{3} (t^2-3)^{frac{3}{2}}|^b_a=

= frac{10}{3} (t^2-3)^{frac{3}{2}}|^b_a=frac{10}{3}((b^2-3)^{frac{3}{2}}-(a^2-3)^{frac{3}{2}})

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Это неопределенный интеграл

 int {10t* sqrt{t^2-3} } , dt = int {5 sqrt{t^2-3} } , d(t^2)=

=5int{sqrt{t^2-3} } , d(t^2-3)= frac{5*2}{3} (t^2-3)^{frac{3}{2}}=frac{10}{3} (t^2-3)^{frac{3}{2}}


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