Calcular la integral $\int\frac{{\left(-1\right)}^3}{t^{\left(2+3\right)}}dt$

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

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