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cos(z)=2i la ecuación

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Solución numérica:

Buscar la solución numérica en el intervalo [, ]

Solución

Ha introducido [src]
cos(z) = 2*I
$$\cos{\left(z \right)} = 2 i$$
Solución detallada
Tenemos la ecuación
$$\cos{\left(z \right)} = 2 i$$
es la ecuación trigonométrica más simple
Como el miembro derecho de la ecuación
en el módulo =
True

pero cos
no puede ser más de 1 o menos de -1
significa que la ecuación correspondiente no tiene solución.
Gráfica
Respuesta rápida [src]
     pi             
z1 = -- - I*asinh(2)
     2              
$$z_{1} = \frac{\pi}{2} - i \operatorname{asinh}{\left(2 \right)}$$
     3*pi             
z2 = ---- + I*asinh(2)
      2               
$$z_{2} = \frac{3 \pi}{2} + i \operatorname{asinh}{\left(2 \right)}$$
z2 = 3*pi/2 + i*asinh(2)
Suma y producto de raíces [src]
suma
pi                3*pi             
-- - I*asinh(2) + ---- + I*asinh(2)
2                  2               
$$\left(\frac{\pi}{2} - i \operatorname{asinh}{\left(2 \right)}\right) + \left(\frac{3 \pi}{2} + i \operatorname{asinh}{\left(2 \right)}\right)$$
=
2*pi
$$2 \pi$$
producto
/pi             \ /3*pi             \
|-- - I*asinh(2)|*|---- + I*asinh(2)|
\2              / \ 2               /
$$\left(\frac{\pi}{2} - i \operatorname{asinh}{\left(2 \right)}\right) \left(\frac{3 \pi}{2} + i \operatorname{asinh}{\left(2 \right)}\right)$$
=
                2                
     2      3*pi                 
asinh (2) + ----- - pi*I*asinh(2)
              4                  
$$\operatorname{asinh}^{2}{\left(2 \right)} + \frac{3 \pi^{2}}{4} - i \pi \operatorname{asinh}{\left(2 \right)}$$
asinh(2)^2 + 3*pi^2/4 - pi*i*asinh(2)
Respuesta numérica [src]
z1 = -10.9955742875643 - 1.44363547517881*i
z2 = -95.8185759344887 + 1.44363547517881*i
z3 = -20.4203522483337 + 1.44363547517881*i
z4 = 73.8274273593601 + 1.44363547517881*i
z5 = -29.845130209103 - 1.44363547517881*i
z6 = -58.1194640914112 + 1.44363547517881*i
z7 = -1.5707963267949 + 1.44363547517881*i
z8 = 26.7035375555132 - 1.44363547517881*i
z9 = 86.3937979737193 + 1.44363547517881*i
z10 = -86.3937979737193 - 1.44363547517881*i
z11 = 61.261056745001 + 1.44363547517881*i
z12 = 23.5619449019235 + 1.44363547517881*i
z13 = 29.845130209103 + 1.44363547517881*i
z14 = 36.1283155162826 + 1.44363547517881*i
z15 = -83.2522053201295 + 1.44363547517881*i
z16 = 54.9778714378214 + 1.44363547517881*i
z17 = -36.1283155162826 - 1.44363547517881*i
z18 = 98.9601685880785 + 1.44363547517881*i
z19 = -64.4026493985908 + 1.44363547517881*i
z20 = 1.5707963267949 - 1.44363547517881*i
z21 = 4.71238898038469 + 1.44363547517881*i
z22 = 67.5442420521806 + 1.44363547517881*i
z23 = -98.9601685880785 - 1.44363547517881*i
z24 = 45.553093477052 - 1.44363547517881*i
z25 = -67.5442420521806 - 1.44363547517881*i
z26 = -89.5353906273091 + 1.44363547517881*i
z27 = -26.7035375555132 + 1.44363547517881*i
z28 = 42.4115008234622 + 1.44363547517881*i
z29 = 14.1371669411541 - 1.44363547517881*i
z30 = -92.6769832808989 - 1.44363547517881*i
z31 = -76.9690200129499 + 1.44363547517881*i
z32 = -4.71238898038469 - 1.44363547517881*i
z33 = -17.2787595947439 - 1.44363547517881*i
z34 = -14.1371669411541 + 1.44363547517881*i
z35 = 51.8362787842316 - 1.44363547517881*i
z36 = 89.5353906273091 - 1.44363547517881*i
z37 = -48.6946861306418 - 1.44363547517881*i
z38 = 48.6946861306418 + 1.44363547517881*i
z39 = 80.1106126665397 + 1.44363547517881*i
z40 = 17.2787595947439 + 1.44363547517881*i
z41 = -7.85398163397448 + 1.44363547517881*i
z42 = -32.9867228626928 + 1.44363547517881*i
z43 = -54.9778714378214 - 1.44363547517881*i
z44 = 10.9955742875643 + 1.44363547517881*i
z45 = -39.2699081698724 + 1.44363547517881*i
z46 = 58.1194640914112 - 1.44363547517881*i
z47 = -42.4115008234622 - 1.44363547517881*i
z48 = 39.2699081698724 - 1.44363547517881*i
z49 = 32.9867228626928 - 1.44363547517881*i
z50 = -73.8274273593601 - 1.44363547517881*i
z51 = 76.9690200129499 - 1.44363547517881*i
z52 = 70.6858347057703 - 1.44363547517881*i
z53 = 7.85398163397448 - 1.44363547517881*i
z54 = -23.5619449019235 - 1.44363547517881*i
z55 = 83.2522053201295 - 1.44363547517881*i
z56 = 64.4026493985908 - 1.44363547517881*i
z57 = -45.553093477052 + 1.44363547517881*i
z58 = 20.4203522483337 - 1.44363547517881*i
z59 = -51.8362787842316 + 1.44363547517881*i
z60 = -70.6858347057703 + 1.44363547517881*i
z61 = -80.1106126665397 - 1.44363547517881*i
z62 = 95.8185759344887 - 1.44363547517881*i
z63 = 92.6769832808989 + 1.44363547517881*i
z64 = -61.261056745001 - 1.44363547517881*i
z64 = -61.261056745001 - 1.44363547517881*i