Hi all,

sorry for my cryptic previous posting. Here is my question again:

I am searching for an easy way to determine the sign of a function

m(a) = 1/4*(-2*g+ln(1-l+a)*g-(g*ln(1-l+a)*(ln(1-l+a)*g-4*g+8*d*a-8*y))^(1/2))/g .

More specifically, I want to find out whether m(a) can assume a positive value given that

(1+l-a) lies between 0 and 1 and all parameters (g,d,l,y) are nonnegative (I have plotted the function; the plot exhibits that the fct does not assume a value greater than or equal to 0. However, I want to have an algebraic solution).

Hi all,

I would be very happy if someone could help me with this one.

I'm trying to solve for an equilibrium of two functions u and U:

u:=ln(y-p*a-g*m)+(1/(M+m+1))*ln(1-l+e*a)

U:=ln(Y-P*A-G*M)+(1/(m+M+1))*ln(1-L-E*A)

where a,m are the variables of u, A,M are the variables of U, and y,Y,p,P,g,G,l,L,e,E are parameters. All variables and parameters are nonnegative.

Hi Maple experts,