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A student finds ∫ x√(x² + 1) dx with u = x² + 1. Which… | StemPy Lab
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A student finds ∫ x√(x² + 1) dx with u = x² + 1. Which answer is correct?
Mathematics
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High School (11–12)
Functions and Calculus › Integrals
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Created by
StemPy Lab
A student finds
∫
x
x
2
+
1
d
x
\displaystyle\int x\sqrt{x^2 + 1}\,dx
∫
x
x
2
+
1
d
x
with
u
=
x
2
+
1
u = x^2 + 1
u
=
x
2
+
1
. Which answer is correct?
2
3
(
x
2
+
1
)
3
/
2
+
C
\dfrac{2}{3}(x^2 + 1)^{3/2} + C
3
2
(
x
2
+
1
)
3/2
+
C
1
3
(
x
2
+
1
)
3
/
2
+
C
\dfrac{1}{3}(x^2 + 1)^{3/2} + C
3
1
(
x
2
+
1
)
3/2
+
C
3
2
(
x
2
+
1
)
3
/
2
+
C
\dfrac{3}{2}(x^2 + 1)^{3/2} + C
2
3
(
x
2
+
1
)
3/2
+
C
1
2
(
x
2
+
1
)
3
/
2
+
C
\dfrac{1}{2}(x^2 + 1)^{3/2} + C
2
1
(
x
2
+
1
)
3/2
+
C
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