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mustafajibawi1
25.11.2021 •
Mathematics
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Ответ:
Ответ:
Step-by-step explanation:
We need to integrate the given expression. Let I be the answer .
![\implies\displaystyle I = \int (cos(3x) + 3sin(x) )dx \\\\\implies\displaystyle I = \int cos(3x) + \int sin(x)\ dx](/tpl/images/1245/8737/52a6e.png)
Let u = 3x , then du = 3dx . Henceforth 1/3 du = dx .Rewrite using du and u .