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((((-1)^(n))*((0.91)^(2n+1)))/((n+1)*(n+2)))*cos(n*((pi)/(6)))

Suma de la serie ((((-1)^(n))*((0.91)^(2n+1)))/((n+1)*(n+2)))*cos(n*((pi)/(6)))



=

Solución

Ha introducido [src]
 132                               
_____                              
\    `                             
 \                2*n + 1          
  \        n / 91\                 
   \   (-1) *|---|                 
   /         \100/           /  pi\
  /    ------------------*cos|n*--|
 /      (n + 1)*(n + 2)      \  6 /
/____,                             
n = 1                              
$$\sum_{n=1}^{132} \frac{\left(-1\right)^{n} \left(\frac{91}{100}\right)^{2 n + 1}}{\left(n + 1\right) \left(n + 2\right)} \cos{\left(n \frac{\pi}{6} \right)}$$
Sum((((-1)^n*(91/100)^(2*n + 1))/(((n + 1)*(n + 2))))*cos(n*(pi/6)), (n, 1, 132))
Velocidad de la convergencia de la serie
Respuesta [src]
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 464804365223814107870835117135853897360438346508786704956345241877485996089297093500405237884514041303193215101924740155053065337870826514476072312035409869446245837210093366980439017133586226524815900258928796916661208905117181090477628435015416572585025136010267544004810034867537537090855584669432706213749578906927038499829713588946746390408044859309211747813079494210035035531963128453584033106972864116196181468756429447834368849392055922535565670142052965133664682773097208188491240010100599990361087214067490189652483884467862105460422802458835384733963890820213158563561    63886290776561567474588340587503988245215706775427859156143626588943804488295489863243776710586365576470800500988504253259153437547647413564187602331129259897167205296734873860436110032705015361973775764411366934413738846765764334163397565966328747446909865194088125609679019339695145135060380532642762181378763219259217282580125621924130634034791168400137882625941097873650217557995205095147493163999737176399176567369325669218158191602984303226874599076953113464306965037541633426467398575789276489547962384377779990136651087926234440474572205373773217803*\/ 3 
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$$\frac{464804365223814107870835117135853897360438346508786704956345241877485996089297093500405237884514041303193215101924740155053065337870826514476072312035409869446245837210093366980439017133586226524815900258928796916661208905117181090477628435015416572585025136010267544004810034867537537090855584669432706213749578906927038499829713588946746390408044859309211747813079494210035035531963128453584033106972864116196181468756429447834368849392055922535565670142052965133664682773097208188491240010100599990361087214067490189652483884467862105460422802458835384733963890820213158563561}{34327748193105590991010422797913480908017902710644200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000} - \frac{63886290776561567474588340587503988245215706775427859156143626588943804488295489863243776710586365576470800500988504253259153437547647413564187602331129259897167205296734873860436110032705015361973775764411366934413738846765764334163397565966328747446909865194088125609679019339695145135060380532642762181378763219259217282580125621924130634034791168400137882625941097873650217557995205095147493163999737176399176567369325669218158191602984303226874599076953113464306965037541633426467398575789276489547962384377779990136651087926234440474572205373773217803 \sqrt{3}}{1113520532784383294404593317894160000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000}$$
464804365223814107870835117135853897360438346508786704956345241877485996089297093500405237884514041303193215101924740155053065337870826514476072312035409869446245837210093366980439017133586226524815900258928796916661208905117181090477628435015416572585025136010267544004810034867537537090855584669432706213749578906927038499829713588946746390408044859309211747813079494210035035531963128453584033106972864116196181468756429447834368849392055922535565670142052965133664682773097208188491240010100599990361087214067490189652483884467862105460422802458835384733963890820213158563561/34327748193105590991010422797913480908017902710644200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 - 63886290776561567474588340587503988245215706775427859156143626588943804488295489863243776710586365576470800500988504253259153437547647413564187602331129259897167205296734873860436110032705015361973775764411366934413738846765764334163397565966328747446909865194088125609679019339695145135060380532642762181378763219259217282580125621924130634034791168400137882625941097873650217557995205095147493163999737176399176567369325669218158191602984303226874599076953113464306965037541633426467398575789276489547962384377779990136651087926234440474572205373773217803*sqrt(3)/1113520532784383294404593317894160000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Respuesta numérica [src]
-0.0858331883786622585613960631975
-0.0858331883786622585613960631975
Gráfico
Suma de la serie ((((-1)^(n))*((0.91)^(2n+1)))/((n+1)*(n+2)))*cos(n*((pi)/(6)))

    Ejemplos de hallazgo de la suma de la serie