Integral de x^2(x^2-4)^(1/2) dx
Solución
Respuesta (Indefinida)
[src]
// 3 5 | 2| \
|| /x\ 2*x 3*x x |x | |
/ ||- 2*acosh|-| + ------------ - -------------- + -------------- for ---- > 1|
| || \2/ _________ _________ _________ 4 |
| ________ || / 2 / 2 / 2 |
| 2 / 2 || \/ -4 + x 2*\/ -4 + x 4*\/ -4 + x |
| x *\/ x - 4 dx = C + |< |
| || 5 3 |
/ || /x\ 2*I*x I*x 3*I*x |
|| 2*I*asin|-| - ----------- - ------------- + ------------- otherwise |
|| \2/ ________ ________ ________ |
|| / 2 / 2 / 2 |
\\ \/ 4 - x 4*\/ 4 - x 2*\/ 4 - x /
∫x2x2−4dx=C+⎩⎨⎧4x2−4x5−2x2−43x3+x2−42x−2acosh(2x)−44−x2ix5+24−x23ix3−4−x22ix+2iasin(2x)for4∣x2∣>1otherwise
Gráfica
1
/
|
| / 2 2 6 4 4 2
| | 1 2 2*x 9*x x 3*x 5*x x
| |- -------------- + ------------ - ------------ - -------------- - -------------- + -------------- + -------------- for -- > 1
| | _________ _________ 3/2 _________ 3/2 3/2 _________ 4
| | / 2 / 2 / 2\ / 2 / 2\ / 2\ / 2
| | / x \/ -4 + x \-4 + x / 2*\/ -4 + x 4*\-4 + x / 2*\-4 + x / 4*\/ -4 + x
| | / -1 + --
| | \/ 4
| < dx
| | 2 4 6 4 2
| | I 2*I 2*I*x 5*I*x I*x 3*I*x 9*I*x
| | ------------- - ----------- - ----------- - ------------- - ------------- + ------------- + ------------- otherwise
| | ________ ________ 3/2 ________ 3/2 3/2 ________
| | / 2 / 2 / 2\ / 2 / 2\ / 2\ / 2
| | / x \/ 4 - x \4 - x / 4*\/ 4 - x 4*\4 - x / 2*\4 - x / 2*\/ 4 - x
| | / 1 - --
| \ \/ 4
|
/
0
0∫1⎩⎨⎧−4(x2−4)23x6+4x2−45x4+2(x2−4)233x4−2x2−49x2−(x2−4)232x2+x2−42−4x2−11−4(4−x2)23ix6−44−x25ix4+2(4−x2)233ix4+24−x29ix2−(4−x2)232ix2−4−x22i+1−4x2ifor4x2>1otherwisedx
=
1
/
|
| / 2 2 6 4 4 2
| | 1 2 2*x 9*x x 3*x 5*x x
| |- -------------- + ------------ - ------------ - -------------- - -------------- + -------------- + -------------- for -- > 1
| | _________ _________ 3/2 _________ 3/2 3/2 _________ 4
| | / 2 / 2 / 2\ / 2 / 2\ / 2\ / 2
| | / x \/ -4 + x \-4 + x / 2*\/ -4 + x 4*\-4 + x / 2*\-4 + x / 4*\/ -4 + x
| | / -1 + --
| | \/ 4
| < dx
| | 2 4 6 4 2
| | I 2*I 2*I*x 5*I*x I*x 3*I*x 9*I*x
| | ------------- - ----------- - ----------- - ------------- - ------------- + ------------- + ------------- otherwise
| | ________ ________ 3/2 ________ 3/2 3/2 ________
| | / 2 / 2 / 2\ / 2 / 2\ / 2\ / 2
| | / x \/ 4 - x \4 - x / 4*\/ 4 - x 4*\4 - x / 2*\4 - x / 2*\/ 4 - x
| | / 1 - --
| \ \/ 4
|
/
0
0∫1⎩⎨⎧−4(x2−4)23x6+4x2−45x4+2(x2−4)233x4−2x2−49x2−(x2−4)232x2+x2−42−4x2−11−4(4−x2)23ix6−44−x25ix4+2(4−x2)233ix4+24−x29ix2−(4−x2)232ix2−4−x22i+1−4x2ifor4x2>1otherwisedx
Integral(Piecewise((-1/sqrt(-1 + x^2/4) + 2/sqrt(-4 + x^2) - 2*x^2/(-4 + x^2)^(3/2) - 9*x^2/(2*sqrt(-4 + x^2)) - x^6/(4*(-4 + x^2)^(3/2)) + 3*x^4/(2*(-4 + x^2)^(3/2)) + 5*x^4/(4*sqrt(-4 + x^2)), x^2/4 > 1), (i/sqrt(1 - x^2/4) - 2*i/sqrt(4 - x^2) - 2*i*x^2/(4 - x^2)^(3/2) - 5*i*x^4/(4*sqrt(4 - x^2)) - i*x^6/(4*(4 - x^2)^(3/2)) + 3*i*x^4/(2*(4 - x^2)^(3/2)) + 9*i*x^2/(2*sqrt(4 - x^2)), True)), (x, 0, 1))
(0.0 + 0.614184849304378j)
(0.0 + 0.614184849304378j)
Estos ejemplos se pueden aplicar para introducción de los límites de integración inferior y superior.