Solución detallada
Para cada expresión dentro del módulo en la ecuación
admitimos los casos cuando la expresión correspondiente es ">= 0" o "< 0",
resolvemos las ecuaciones obtenidas.
1.
$$x \geq 0$$
o
$$0 \leq x \wedge x < \infty$$
obtenemos la ecuación
$$- a + 11 x + \sqrt{1 - 2 x} = 0$$
simplificamos, obtenemos
$$- a + 11 x + \sqrt{1 - 2 x} = 0$$
la resolución en este intervalo:
$$x_{1} = \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121}$$
$$x_{2} = \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121}$$
2.
$$x < 0$$
o
$$-\infty < x \wedge x < 0$$
obtenemos la ecuación
$$- a + 11 \left(- x\right) + \sqrt{1 - 2 x} = 0$$
simplificamos, obtenemos
$$- a - 11 x + \sqrt{1 - 2 x} = 0$$
la resolución en este intervalo:
$$x_{3} = - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121}$$
$$x_{4} = - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121}$$
Entonces la respuesta definitiva es:
$$x_{1} = \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121}$$
$$x_{2} = \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121}$$
$$x_{3} = - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121}$$
$$x_{4} = - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121}$$
Suma y producto de raíces
[src]
// ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \
|| 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a |
||- --- - -- - -------------- for --- + -- + ------------------- > 0| ||- --- - -- - -------------- for --- + -- + ------------------- > 0| ||- --- - -- + -------------- for --- + -- - ------------------- > 0| ||- --- - -- + -------------- for --- + -- - ------------------- > 0| ||- --- - -------------- + -- for --- - -- + ------------------- <= 0| ||- --- - -------------- + -- for --- - -- + ------------------- <= 0| ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0| ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0|
I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 | + I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 | + I*im|< 121 121 11 121 11 121 | + re|< 121 121 11 121 11 121 | + I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 |
|| | || | || | || | || | || | || | || |
|| nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise |
\\ / \\ / \\ / \\ / \\ / \\ / \\ / \\ /
$$\left(\left(\left(\operatorname{re}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right) + \left(\operatorname{re}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right)\right) + \left(\operatorname{re}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right)\right) + \left(\operatorname{re}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right)$$
// ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \ // ____________ ___ ___________ \
|| 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a |
||- --- - -- - -------------- for --- + -- + ------------------- > 0| ||- --- - -- + -------------- for --- + -- - ------------------- > 0| ||- --- - -------------- + -- for --- - -- + ------------------- <= 0| ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0| ||- --- - -- - -------------- for --- + -- + ------------------- > 0| ||- --- - -- + -------------- for --- + -- - ------------------- > 0| ||- --- - -------------- + -- for --- - -- + ------------------- <= 0| ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0|
I*im|< 121 11 121 121 11 121 | + I*im|< 121 11 121 121 11 121 | + I*im|< 121 121 11 121 11 121 | + I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 | + re|< 121 121 11 121 11 121 | + re|< 121 11 121 121 11 121 |
|| | || | || | || | || | || | || | || |
|| nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise | || nan otherwise |
\\ / \\ / \\ / \\ / \\ / \\ / \\ / \\ /
$$\operatorname{re}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + \operatorname{re}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + \operatorname{re}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + \operatorname{re}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}$$
/ // ____________ ___ ___________ \ // ____________ ___ ___________ \\ / // ____________ ___ ___________ \ // ____________ ___ ___________ \\ / // ____________ ___ ___________ \ // ____________ ___ ___________ \\ / // ____________ ___ ___________ \ // ____________ ___ ___________ \\
| || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a || | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a || | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a || | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a ||
| ||- --- - -- - -------------- for --- + -- + ------------------- > 0| ||- --- - -- - -------------- for --- + -- + ------------------- > 0|| | ||- --- - -- + -------------- for --- + -- - ------------------- > 0| ||- --- - -- + -------------- for --- + -- - ------------------- > 0|| | ||- --- - -------------- + -- for --- - -- + ------------------- <= 0| ||- --- - -------------- + -- for --- - -- + ------------------- <= 0|| | ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0| ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0||
|I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 ||*|I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 ||*|I*im|< 121 121 11 121 11 121 | + re|< 121 121 11 121 11 121 ||*|I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 ||
| || | || || | || | || || | || | || || | || | || ||
| || nan otherwise | || nan otherwise || | || nan otherwise | || nan otherwise || | || nan otherwise | || nan otherwise || | || nan otherwise | || nan otherwise ||
\ \\ / \\ // \ \\ / \\ // \ \\ / \\ // \ \\ / \\ //
$$\left(\operatorname{re}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right) \left(\operatorname{re}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right) \left(\operatorname{re}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right) \left(\operatorname{re}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}\right)$$
/ 4 4 2 2 2 2 3 3
|1 + im (a) + re (a) - 2*re (a) + 2*im (a) - 6*im (a)*re (a) - 4*I*im (a)*re(a) - 4*I*im(a)*re(a) + 4*I*re (a)*im(a) / 61 \
|------------------------------------------------------------------------------------------------------------------- for And|a <= --, a > 1|
< 14641 \ 11 /
|
| nan otherwise
\
$$\begin{cases} \frac{\left(\operatorname{re}{\left(a\right)}\right)^{4} + 4 i \left(\operatorname{re}{\left(a\right)}\right)^{3} \operatorname{im}{\left(a\right)} - 6 \left(\operatorname{re}{\left(a\right)}\right)^{2} \left(\operatorname{im}{\left(a\right)}\right)^{2} - 2 \left(\operatorname{re}{\left(a\right)}\right)^{2} - 4 i \operatorname{re}{\left(a\right)} \left(\operatorname{im}{\left(a\right)}\right)^{3} - 4 i \operatorname{re}{\left(a\right)} \operatorname{im}{\left(a\right)} + \left(\operatorname{im}{\left(a\right)}\right)^{4} + 2 \left(\operatorname{im}{\left(a\right)}\right)^{2} + 1}{14641} & \text{for}\: a \leq \frac{61}{11} \wedge a > 1 \\\text{NaN} & \text{otherwise} \end{cases}$$
Piecewise(((1 + im(a)^4 + re(a)^4 - 2*re(a)^2 + 2*im(a)^2 - 6*im(a)^2*re(a)^2 - 4*i*im(a)^3*re(a) - 4*i*im(a)*re(a) + 4*i*re(a)^3*im(a))/14641, (a <= 61/11)∧(a > 1)), (nan, True))
// ____________ ___ ___________ \ // ____________ ___ ___________ \
|| 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a |
||- --- - -- - -------------- for --- + -- + ------------------- > 0| ||- --- - -- - -------------- for --- + -- + ------------------- > 0|
x1 = I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 |
|| | || |
|| nan otherwise | || nan otherwise |
\\ / \\ /
$$x_{1} = \operatorname{re}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} - \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}$$
// ____________ ___ ___________ \ // ____________ ___ ___________ \
|| 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a | || 1 a \/ 122 + 22*a 1 a \/ 2 *\/ 61 + 11*a |
||- --- - -- + -------------- for --- + -- - ------------------- > 0| ||- --- - -- + -------------- for --- + -- - ------------------- > 0|
x2 = I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 |
|| | || |
|| nan otherwise | || nan otherwise |
\\ / \\ /
$$x_{2} = \operatorname{re}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} - \frac{a}{11} + \frac{\sqrt{22 a + 122}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} - \frac{\sqrt{2} \sqrt{11 a + 61}}{121} + \frac{1}{121} > 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}$$
// ____________ ___ ___________ \ // ____________ ___ ___________ \
|| 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a | || 1 \/ 122 - 22*a a 1 a \/ 2 *\/ 61 - 11*a |
||- --- - -------------- + -- for --- - -- + ------------------- <= 0| ||- --- - -------------- + -- for --- - -- + ------------------- <= 0|
x3 = I*im|< 121 121 11 121 11 121 | + re|< 121 121 11 121 11 121 |
|| | || |
|| nan otherwise | || nan otherwise |
\\ / \\ /
$$x_{3} = \operatorname{re}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} - \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: - \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} + \frac{1}{121} \leq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}$$
// ____________ ___ ___________ \ // ____________ ___ ___________ \
|| 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a | || 1 a \/ 122 - 22*a 1 a \/ 2 *\/ 61 - 11*a |
||- --- + -- + -------------- for - --- + -- + ------------------- >= 0| ||- --- + -- + -------------- for - --- + -- + ------------------- >= 0|
x4 = I*im|< 121 11 121 121 11 121 | + re|< 121 11 121 121 11 121 |
|| | || |
|| nan otherwise | || nan otherwise |
\\ / \\ /
$$x_{4} = \operatorname{re}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)} + i \operatorname{im}{\left(\begin{cases} \frac{a}{11} + \frac{\sqrt{122 - 22 a}}{121} - \frac{1}{121} & \text{for}\: \frac{a}{11} + \frac{\sqrt{2} \sqrt{61 - 11 a}}{121} - \frac{1}{121} \geq 0 \\\text{NaN} & \text{otherwise} \end{cases}\right)}$$
x4 = re(Piecewise((a/11 + sqrt(122 - 22*a/121 - 1/121, a/11 + sqrt(2)*sqrt(61 - 11*a)/121 - 1/121 >= 0), (nan, True))) + i*im(Piecewise((a/11 + sqrt(122 - 22*a)/121 - 1/121, a/11 + sqrt(2)*sqrt(61 - 11*a)/121 - 1/121 >= 0), (nan, True))))