$\int\:\:x\sqrt{1+x^2}dx$
$\int x\sqrt[3]{3-x^2}dx$
$\int2x\sqrt{x^2+1}dx$
$\int\frac{dx}{\sqrt{25-9x^2}}$
$\int\frac{\sqrt{x^2+4}}{x^4}dx$
$\int\sqrt{5x+3}dx$
$\int\frac{x}{\sqrt{49+x^2}}dx$
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