### sorry for the previous massage

by **omur.tosun@gmail.com** » Mon, 23 Apr 2007 12:10:10 GMT

a = Lambda[d]/(Lambda[d] + Lambda[in]);
(Lambda[in] / Mu[m]) * (k - 1) +
a* ((1 - a^(n - k)) / (1 - a)) +
(Lambda[in] / Mu[in])* a * ((1 - a^(n -k)) / (1 - a)) +
(Lambda[in] / Mu[M]) * a * (( 1 - a^(n -k)) / (1 - a)) +
(Lambda[d] / Mu[D]) * a^(n - k));
Availability (A) = P(0,0)*(k + (a * (1-a^(n-k))))
x=(dA/dLambda(in))--->it gives error massages like using inverse function
i use P() only for writing here. after i take x=(dA/dLambda(in)) i want to find the value using solve[x==0,Lambda(in)] but again i couldn't get any solution..i don't understand what if i do something wrong...