1.

What is `int a^(x) e^(x) dx` equal to ? where c is the constant of integrationA. `(a^(x)e^(x))/(l na) + c`B. `a^(x) e^(x) + c`C. `(a^(x) e^(x))/(l n(ae)) + c`D. None of the above

Answer» Correct Answer - C
Let `I = int underset(I)a^(x) underset(II)(e)^(x) dx`
`I = a^(x) int e^(x) dx - int a^(x) l n a e^(x) dx`
`I = a^(x) e^(x) - l n a int a^(x) e^(x) dx`
`I = a^(x) e^(x) - l n a. (I)`
`rArr (1 + l n a) I = a^(x) e^(x)`
`rArr I = (a^(x) e^(x))/(l n (ae")) + c ( :. l n e = 1)`


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