Calcular la integral $\int\frac{7\sqrt[3]{x^{2}}}{\sqrt{x^3\sqrt{x}}}dx$

Calcular la integral

$\int\frac{x}{\sqrt{x^2+9}}dx$

Calcular la integral

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

Calcular la integral

$\int\frac{1}{\sqrt{x^2-36}}dx$

Calcular la integral

$\int\frac{1}{\sqrt{1-x^2}}dx$

Calcular la integral

$\int\frac{x}{\sqrt{16-x^2}}dx$

Calcular la integral

$\int\frac{1}{\sqrt{1-5x}}dx$

Calcular la integral

$\int\frac{x^3}{\sqrt{x^2+4}}dx$