Tavola degli integrali indefiniti di funzioni d'arco

Questa pagina contiene una tavola di integrali indefiniti di funzioni d'arco. Per altri integrali vedi Integrale § Tavole di integrali.

In questa pagina si assume che c denoti una costante diversa da 0.

arcsin x c d x = x arcsin x c + c 2 x 2 {\displaystyle \int \arcsin {\frac {x}{c}}\,dx=x\arcsin {\frac {x}{c}}+{\sqrt {c^{2}-x^{2}}}}
x arcsin x c d x = ( x 2 2 c 2 4 ) arcsin x c + x 4 c 2 x 2 {\displaystyle \int x\arcsin {\frac {x}{c}}\,dx=\left({\frac {x^{2}}{2}}-{\frac {c^{2}}{4}}\right)\arcsin {\frac {x}{c}}+{\frac {x}{4}}{\sqrt {c^{2}-x^{2}}}}
x 2 arcsin x c d x = x 3 3 arcsin x c + x 2 + 2 c 2 9 c 2 x 2 {\displaystyle \int x^{2}\arcsin {\frac {x}{c}}\,dx={\frac {x^{3}}{3}}\arcsin {\frac {x}{c}}+{\frac {x^{2}+2c^{2}}{9}}{\sqrt {c^{2}-x^{2}}}}
arccos x c d x = x arccos x c c 2 x 2 {\displaystyle \int \arccos {\frac {x}{c}}\,dx=x\arccos {\frac {x}{c}}-{\sqrt {c^{2}-x^{2}}}}
x arccos x c d x = ( x 2 2 c 2 4 ) arccos x c x 4 c 2 x 2 {\displaystyle \int x\arccos {\frac {x}{c}}\,dx=\left({\frac {x^{2}}{2}}-{\frac {c^{2}}{4}}\right)\arccos {\frac {x}{c}}-{\frac {x}{4}}{\sqrt {c^{2}-x^{2}}}}
x 2 arccos x c d x = x 3 3 arccos x c x 2 + 2 c 2 9 c 2 x 2 {\displaystyle \int x^{2}\arccos {\frac {x}{c}}\,dx={\frac {x^{3}}{3}}\arccos {\frac {x}{c}}-{\frac {x^{2}+2c^{2}}{9}}{\sqrt {c^{2}-x^{2}}}}
arctan x c d x = x arctan x c c 2 ln ( c 2 + x 2 ) {\displaystyle \int \arctan {\frac {x}{c}}\,dx=x\arctan {\frac {x}{c}}-{\frac {c}{2}}\ln(c^{2}+x^{2})}
x arctan x c d x = c 2 + x 2 2 arctan x c c x 2 {\displaystyle \int x\arctan {\frac {x}{c}}\,dx={\frac {c^{2}+x^{2}}{2}}\arctan {\frac {x}{c}}-{\frac {cx}{2}}}
x 2 arctan x c d x = x 3 3 arctan x c c x 2 6 + c 3 6 ln c 2 + x 2 {\displaystyle \int x^{2}\arctan {\frac {x}{c}}\,dx={\frac {x^{3}}{3}}\arctan {\frac {x}{c}}-{\frac {cx^{2}}{6}}+{\frac {c^{3}}{6}}\ln {c^{2}+x^{2}}}
x n arctan x c d x = x n + 1 n + 1 arctan x c c n + 1 x n + 1 d x c 2 + x 2 (per  n 1 ) {\displaystyle \int x^{n}\arctan {\frac {x}{c}}\,dx={\frac {x^{n+1}}{n+1}}\arctan {\frac {x}{c}}-{\frac {c}{n+1}}\int {\frac {x^{n+1}dx}{c^{2}+x^{2}}}\qquad {\mbox{(per }}n\neq 1{\mbox{)}}}
arcsec x c d x = x arcsec x c + x c | x | ln | x ± x 2 1 | {\displaystyle \int \operatorname {arcsec} {\frac {x}{c}}\,dx=x\operatorname {arcsec} {\frac {x}{c}}+{\frac {x}{c|x|}}\ln {|x\pm {\sqrt {x^{2}-1}}|}}
a r c c o t x c d x = x a r c c o t x c + c 2 ln ( c 2 + x 2 ) {\displaystyle \int \mathrm {arccot} \,{\frac {x}{c}}\,dx=x\,\mathrm {arccot} \,{\frac {x}{c}}+{\frac {c}{2}}\ln(c^{2}+x^{2})}
x a r c c o t x c d x = c 2 + x 2 2 a r c c o t x c + c x 2 {\displaystyle \int x\,\mathrm {arccot} \,{\frac {x}{c}}\,dx={\frac {c^{2}+x^{2}}{2}}\,\mathrm {arccot} \,{\frac {x}{c}}+{\frac {cx}{2}}}
x 2 a r c c o t x c d x = x 3 3 a r c c o t x c + c x 2 6 c 3 6 ln ( c 2 + x 2 ) {\displaystyle \int x^{2}\,\mathrm {arccot} \,{\frac {x}{c}}\,dx={\frac {x^{3}}{3}}\,\mathrm {arccot} \,{\frac {x}{c}}+{\frac {cx^{2}}{6}}-{\frac {c^{3}}{6}}\ln(c^{2}+x^{2})}
x n a r c c o t x c d x = x n + 1 n + 1 a r c c o t x c + c n + 1 x n + 1 d x c 2 + x 2 (per  n 1 ) {\displaystyle \int x^{n}\,\mathrm {arccot} \,{\frac {x}{c}}\,dx={\frac {x^{n+1}}{n+1}}\,\mathrm {arccot} \,{\frac {x}{c}}+{\frac {c}{n+1}}\int {\frac {x^{n+1}dx}{c^{2}+x^{2}}}\qquad {\mbox{(per }}n\neq 1{\mbox{)}}}

Bibliografia

  • Murray R. Spiegel, Manuale di matematica, Etas Libri, 1974, pp. 82-84.
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