Integration of (3x+4/square root of x²+5x+2)dx
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Step-by-step explanation:
∫
(x+3)
2
e
x
(x
2
+5x+7)
dx
let
u
2
=(x+3)
2
⟹x
2
+5x+7=u
2
−u+1
∫
(u)
2
e
u−3
(u
2
−u+1)
du
=e
−3
∫e
u
(
u
2
1
−
u
1
+1)du
=e
−3
∫e
u
du+e
−3
∫(
u
1
−
u
2
1
)e
u
du
=e
−3
e
u
+
u
e
−3
=e
u−3
+
u
e
−3
Putting the value of u, we get
=e
x
+
x+3
e
−3
+c
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