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Mathematics
Mathematics
Problem
Calculate
d
d
x
(
∫
1
x
2
+
3
t
2
+
1
d
t
)
.
\displaystyle \frac{d}{dx}\left(\int_{1}^{x^{2}+3} \sqrt{t^{2}+1}\,dt\right).
d
x
d
(
∫
1
x
2
+
3
t
2
+
1
d
t
)
.
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