Integrate $\int x^2\sqrt{x^2-4}dx$

Find the integral

$\int\:\frac{sen\sqrt{x}}{\sqrt{x}}dx$

Find the integral

$\int\left(\frac{\sin\sqrt{x}}{\sqrt{x}}\right)dx$

Find the integral

$\int\frac{\tan\left(\sqrt{x}\right)}{\sqrt{x}}dx$

Find the integral

$\int\frac{cos\sqrt{x}}{\sqrt{x}}dx$

Find the integral

$\int x^5\sqrt{x^3+1}dx$

Find the integral

$\int\:\:x\sqrt{1+x^2}dx$

Find the integral

$\int x\sqrt[3]{3-x^2}dx$