Mathematics 2 Deneme Sınavı Sorusu #361306

What is the result of ∫(x+2)ex-8dx?


xex-8+c

(x-8)ex-8+c

-8ex-8+c

(x+2)ex-8+c

(x+1)ex-8+c


Yanıt Açıklaması:

Letx-8=y then dy=dx and x=y+8. So we have

We need to use the method of integration by parts to find the first integral above. Let u=y and dv=eydy, then we get du=dy and v=ey. Hence it is obvious that

 

Therefore, we find

 

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