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Mathematics
Mathematics
Problem
Prove that
4
≤
∫
1
3
3
+
x
3
d
x
≤
2
30
4 \le \int_{1}^{3} \sqrt{3+x^3} dx \le 2\sqrt{30}
4
≤
∫
1
3
3
+
x
3
d
x
≤
2
30
.
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