Integral de (3*x^2+7)/(x^3*7*x+3) dx
Solución
Solución detallada
Vuelva a escribir el integrando:
3 x 2 + 7 x 7 x 3 + 3 = 3 x 2 x 7 x 3 + 3 + 7 x 7 x 3 + 3 \frac{3 x^{2} + 7}{x 7 x^{3} + 3} = \frac{3 x^{2}}{x 7 x^{3} + 3} + \frac{7}{x 7 x^{3} + 3} x 7 x 3 + 3 3 x 2 + 7 = x 7 x 3 + 3 3 x 2 + x 7 x 3 + 3 7
Integramos término a término:
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫ 3 x 2 x 7 x 3 + 3 d x = 3 ∫ x 2 x 7 x 3 + 3 d x \int \frac{3 x^{2}}{x 7 x^{3} + 3}\, dx = 3 \int \frac{x^{2}}{x 7 x^{3} + 3}\, dx ∫ x 7 x 3 + 3 3 x 2 d x = 3 ∫ x 7 x 3 + 3 x 2 d x
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
189 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 168 − 189 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 168 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 84 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 84 \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{168} - \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{168} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{84} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{84} 168 4 189 2 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) − 168 4 189 2 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 84 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 84 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
Por lo tanto, el resultado es: 189 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 56 − 189 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 56 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 28 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 28 \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} - \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{28} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{28} 56 4 189 2 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) − 56 4 189 2 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 28 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 28 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
La integral del producto de una función por una constante es la constante por la integral de esta función:
∫ 7 x 7 x 3 + 3 d x = 7 ∫ 1 x 7 x 3 + 3 d x \int \frac{7}{x 7 x^{3} + 3}\, dx = 7 \int \frac{1}{x 7 x^{3} + 3}\, dx ∫ x 7 x 3 + 3 7 d x = 7 ∫ x 7 x 3 + 3 1 d x
No puedo encontrar los pasos en la búsqueda de esta integral.
Pero la integral
− 1029 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 168 + 1029 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 168 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 84 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 84 - \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{168} + \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{168} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{84} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{84} − 168 4 1029 2 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) + 168 4 1029 2 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 84 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 84 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
Por lo tanto, el resultado es: − 1029 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 24 + 1029 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 24 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 12 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 12 - \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{12} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{12} − 24 4 1029 2 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) + 24 4 1029 2 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 12 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 12 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
El resultado es: − 1029 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 24 + 189 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 56 − 189 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 56 + 1029 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 24 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 28 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 12 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 28 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 12 - \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} - \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} + \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{28} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{12} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{28} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{12} − 24 4 1029 2 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) + 56 4 189 2 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) − 56 4 189 2 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 24 4 1029 2 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 28 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 12 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 28 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + 12 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
Ahora simplificar:
2 21 4 ( − 7 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 24 + 3 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 56 − 3 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 56 + 7 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 24 + 3 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 28 + 7 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 12 + 3 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 28 + 7 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 12 ) \sqrt{2} \sqrt[4]{21} \left(- \frac{\sqrt{7} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{3} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} - \frac{\sqrt{3} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} + \frac{\sqrt{7} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{3} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{28} + \frac{\sqrt{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{12} + \frac{\sqrt{3} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{28} + \frac{\sqrt{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{12}\right) 2 4 21 − 24 7 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) + 56 3 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) − 56 3 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 24 7 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 28 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 12 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 28 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + 12 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
Añadimos la constante de integración:
2 21 4 ( − 7 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 24 + 3 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 56 − 3 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 56 + 7 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 24 + 3 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 28 + 7 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 12 + 3 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 28 + 7 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 12 ) + c o n s t a n t \sqrt{2} \sqrt[4]{21} \left(- \frac{\sqrt{7} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{3} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} - \frac{\sqrt{3} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} + \frac{\sqrt{7} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{3} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{28} + \frac{\sqrt{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{12} + \frac{\sqrt{3} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{28} + \frac{\sqrt{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{12}\right)+ \mathrm{constant} 2 4 21 − 24 7 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) + 56 3 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) − 56 3 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 24 7 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 28 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 12 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 28 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + 12 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + constant
Respuesta:
2 21 4 ( − 7 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 24 + 3 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 56 − 3 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 56 + 7 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 24 + 3 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 28 + 7 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 12 + 3 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 28 + 7 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 12 ) + c o n s t a n t \sqrt{2} \sqrt[4]{21} \left(- \frac{\sqrt{7} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{3} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} - \frac{\sqrt{3} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} + \frac{\sqrt{7} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{3} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{28} + \frac{\sqrt{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{12} + \frac{\sqrt{3} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{28} + \frac{\sqrt{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{12}\right)+ \mathrm{constant} 2 4 21 − 24 7 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) + 56 3 l o g ( x 2 − 7 4 1029 2 x + 7 21 ) − 56 3 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 24 7 l o g ( x 2 + 7 4 1029 2 x + 7 21 ) + 28 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 12 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 28 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + 12 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + constant
Respuesta (Indefinida)
[src]
/ / ____ ___ 4 ______\ / ____ ___ 4 ______\ / ____ ___ 4 ______\ / ____ ___ 4 ______\ / ___ 3/4 4 ___\ / ___ 3/4 4 ___\ / ___ 3/4 4 ___\ / ___ 3/4 4 ___\
| ___ 4 ______ | 2 \/ 21 x*\/ 2 *\/ 1029 | ___ 4 _____ | 2 \/ 21 x*\/ 2 *\/ 1029 | ___ 4 ______ | 2 \/ 21 x*\/ 2 *\/ 1029 | ___ 4 _____ | 2 \/ 21 x*\/ 2 *\/ 1029 | ___ 4 ___ 3/4 | x*\/ 2 *3 *\/ 7 | ___ 4 ___ 3/4 | x*\/ 2 *3 *\/ 7 | ___ 3/4 4 ___ | x*\/ 2 *3 *\/ 7 | ___ 3/4 4 ___ | x*\/ 2 *3 *\/ 7 |
| 2 \/ 2 *\/ 1029 *log|x + ------ - ----------------| \/ 2 *\/ 189 *log|x + ------ + ----------------| \/ 2 *\/ 1029 *log|x + ------ + ----------------| \/ 2 *\/ 189 *log|x + ------ - ----------------| \/ 2 *\/ 3 *7 *atan|1 + ------------------| \/ 2 *\/ 3 *7 *atan|-1 + ------------------| \/ 2 *3 *\/ 7 *atan|1 + ------------------| \/ 2 *3 *\/ 7 *atan|-1 + ------------------|
| 3*x + 7 \ 7 7 / \ 7 7 / \ 7 7 / \ 7 7 / \ 3 / \ 3 / \ 3 / \ 3 /
| ---------- dx = C - -------------------------------------------------- - ------------------------------------------------- + -------------------------------------------------- + ------------------------------------------------- + --------------------------------------------- + ---------------------------------------------- + --------------------------------------------- + ----------------------------------------------
| 3 24 56 24 56 12 12 28 28
| x *7*x + 3
|
/
∫ 3 x 2 + 7 x 7 x 3 + 3 d x = C − 1029 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 24 + 189 4 2 log ( x 2 − 1029 4 2 x 7 + 21 7 ) 56 − 189 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 56 + 1029 4 2 log ( x 2 + 1029 4 2 x 7 + 21 7 ) 24 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 28 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 − 1 ) 12 + 2 ⋅ 3 3 4 7 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 28 + 2 3 4 ⋅ 7 3 4 atan ( 2 ⋅ 3 3 4 7 4 x 3 + 1 ) 12 \int \frac{3 x^{2} + 7}{x 7 x^{3} + 3}\, dx = C - \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} - \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} - \frac{\sqrt[4]{189} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{56} + \frac{\sqrt[4]{1029} \sqrt{2} \log{\left(x^{2} + \frac{\sqrt[4]{1029} \sqrt{2} x}{7} + \frac{\sqrt{21}}{7} \right)}}{24} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{28} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} - 1 \right)}}{12} + \frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{28} + \frac{\sqrt{2} \sqrt[4]{3} \cdot 7^{\frac{3}{4}} \operatorname{atan}{\left(\frac{\sqrt{2} \cdot 3^{\frac{3}{4}} \sqrt[4]{7} x}{3} + 1 \right)}}{12} ∫ x 7 x 3 + 3 3 x 2 + 7 d x = C − 24 4 1029 2 log ( x 2 − 7 4 1029 2 x + 7 21 ) + 56 4 189 2 log ( x 2 − 7 4 1029 2 x + 7 21 ) − 56 4 189 2 log ( x 2 + 7 4 1029 2 x + 7 21 ) + 24 4 1029 2 log ( x 2 + 7 4 1029 2 x + 7 21 ) + 28 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 12 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x − 1 ) + 28 2 ⋅ 3 4 3 4 7 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 ) + 12 2 4 3 ⋅ 7 4 3 atan ( 3 2 ⋅ 3 4 3 4 7 x + 1 )
Gráfica
0.00 1.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 5 -5
/ / 3 \\ / / 3 \\
| 4 2 | 31752*t 19257*t|| | 4 2 | 31752*t 19257*t||
- RootSum|592704*t + 148176*t + 34225, t -> t*log|- -------- + -------|| + RootSum|592704*t + 148176*t + 34225, t -> t*log|1 - -------- + -------||
\ \ 14615 14615 // \ \ 14615 14615 //
− RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 31752 t 3 14615 + 19257 t 14615 ) ) ) + RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 31752 t 3 14615 + 19257 t 14615 + 1 ) ) ) - \operatorname{RootSum} {\left(592704 t^{4} + 148176 t^{2} + 34225, \left( t \mapsto t \log{\left(- \frac{31752 t^{3}}{14615} + \frac{19257 t}{14615} \right)} \right)\right)} + \operatorname{RootSum} {\left(592704 t^{4} + 148176 t^{2} + 34225, \left( t \mapsto t \log{\left(- \frac{31752 t^{3}}{14615} + \frac{19257 t}{14615} + 1 \right)} \right)\right)} − RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 14615 31752 t 3 + 14615 19257 t ) ) ) + RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 14615 31752 t 3 + 14615 19257 t + 1 ) ) )
=
/ / 3 \\ / / 3 \\
| 4 2 | 31752*t 19257*t|| | 4 2 | 31752*t 19257*t||
- RootSum|592704*t + 148176*t + 34225, t -> t*log|- -------- + -------|| + RootSum|592704*t + 148176*t + 34225, t -> t*log|1 - -------- + -------||
\ \ 14615 14615 // \ \ 14615 14615 //
− RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 31752 t 3 14615 + 19257 t 14615 ) ) ) + RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 31752 t 3 14615 + 19257 t 14615 + 1 ) ) ) - \operatorname{RootSum} {\left(592704 t^{4} + 148176 t^{2} + 34225, \left( t \mapsto t \log{\left(- \frac{31752 t^{3}}{14615} + \frac{19257 t}{14615} \right)} \right)\right)} + \operatorname{RootSum} {\left(592704 t^{4} + 148176 t^{2} + 34225, \left( t \mapsto t \log{\left(- \frac{31752 t^{3}}{14615} + \frac{19257 t}{14615} + 1 \right)} \right)\right)} − RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 14615 31752 t 3 + 14615 19257 t ) ) ) + RootSum ( 592704 t 4 + 148176 t 2 + 34225 , ( t ↦ t log ( − 14615 31752 t 3 + 14615 19257 t + 1 ) ) )
-RootSum(592704*_t^4 + 148176*_t^2 + 34225, Lambda(_t, _t*log(-31752*_t^3/14615 + 19257*_t/14615))) + RootSum(592704*_t^4 + 148176*_t^2 + 34225, Lambda(_t, _t*log(1 - 31752*_t^3/14615 + 19257*_t/14615)))
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.