2-components machine












0












$begingroup$


Can you help me just making me understand the point?



I have a 2-components machine. Both components have independent lifetimes, distributed as exponential r.v. with expected value $mu$ = 5. To make a job they simultaneously work and, if components break, they will be fixed simultaneously (there are moments in which just a component is working).



Considering X(t) the number of functioning componet at time t (t>0), compute:



lim (t--> ∞) of P[X(t+s) = 1] for every s in [0,5]



I don't understand why it should be different from computing the limit of P[X(t) = 1], which is a previous point.



Can you help me understanding this?










share|cite|improve this question









$endgroup$












  • $begingroup$
    Don't we have to know how long it takes to fix a component?
    $endgroup$
    – saulspatz
    Jan 3 at 17:34










  • $begingroup$
    @saulspatz components are fixed simultaneously and immediatly, we can ignore fixing time
    $endgroup$
    – CronoPound
    Jan 4 at 8:07
















0












$begingroup$


Can you help me just making me understand the point?



I have a 2-components machine. Both components have independent lifetimes, distributed as exponential r.v. with expected value $mu$ = 5. To make a job they simultaneously work and, if components break, they will be fixed simultaneously (there are moments in which just a component is working).



Considering X(t) the number of functioning componet at time t (t>0), compute:



lim (t--> ∞) of P[X(t+s) = 1] for every s in [0,5]



I don't understand why it should be different from computing the limit of P[X(t) = 1], which is a previous point.



Can you help me understanding this?










share|cite|improve this question









$endgroup$












  • $begingroup$
    Don't we have to know how long it takes to fix a component?
    $endgroup$
    – saulspatz
    Jan 3 at 17:34










  • $begingroup$
    @saulspatz components are fixed simultaneously and immediatly, we can ignore fixing time
    $endgroup$
    – CronoPound
    Jan 4 at 8:07














0












0








0





$begingroup$


Can you help me just making me understand the point?



I have a 2-components machine. Both components have independent lifetimes, distributed as exponential r.v. with expected value $mu$ = 5. To make a job they simultaneously work and, if components break, they will be fixed simultaneously (there are moments in which just a component is working).



Considering X(t) the number of functioning componet at time t (t>0), compute:



lim (t--> ∞) of P[X(t+s) = 1] for every s in [0,5]



I don't understand why it should be different from computing the limit of P[X(t) = 1], which is a previous point.



Can you help me understanding this?










share|cite|improve this question









$endgroup$




Can you help me just making me understand the point?



I have a 2-components machine. Both components have independent lifetimes, distributed as exponential r.v. with expected value $mu$ = 5. To make a job they simultaneously work and, if components break, they will be fixed simultaneously (there are moments in which just a component is working).



Considering X(t) the number of functioning componet at time t (t>0), compute:



lim (t--> ∞) of P[X(t+s) = 1] for every s in [0,5]



I don't understand why it should be different from computing the limit of P[X(t) = 1], which is a previous point.



Can you help me understanding this?







probability stochastic-processes






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Jan 3 at 16:30









CronoPoundCronoPound

11




11












  • $begingroup$
    Don't we have to know how long it takes to fix a component?
    $endgroup$
    – saulspatz
    Jan 3 at 17:34










  • $begingroup$
    @saulspatz components are fixed simultaneously and immediatly, we can ignore fixing time
    $endgroup$
    – CronoPound
    Jan 4 at 8:07


















  • $begingroup$
    Don't we have to know how long it takes to fix a component?
    $endgroup$
    – saulspatz
    Jan 3 at 17:34










  • $begingroup$
    @saulspatz components are fixed simultaneously and immediatly, we can ignore fixing time
    $endgroup$
    – CronoPound
    Jan 4 at 8:07
















$begingroup$
Don't we have to know how long it takes to fix a component?
$endgroup$
– saulspatz
Jan 3 at 17:34




$begingroup$
Don't we have to know how long it takes to fix a component?
$endgroup$
– saulspatz
Jan 3 at 17:34












$begingroup$
@saulspatz components are fixed simultaneously and immediatly, we can ignore fixing time
$endgroup$
– CronoPound
Jan 4 at 8:07




$begingroup$
@saulspatz components are fixed simultaneously and immediatly, we can ignore fixing time
$endgroup$
– CronoPound
Jan 4 at 8:07










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