Recently, I encountered a problem. I have a function( omega as its variable) (18)
I tried to find a point where its first derivative equals 0. In this case, Maple returned four solutions. In my
question, both beta, gamma, R4 and C2 >0， I want it to return a real positive solution, the first term
in (19) (i.e. 1/(sqrt(beta *gamma) *1/R4 C2).
I know it is easy to find out the positive real roots in this case. This question seems to make no sense.
However, sometime I came across an expression complicated enough that I cannot tell whether it is real
Is there a approach to find a real positive solution of an symbolic eqution?
Thanks in advance!
A University student in BeiHang University, Beijing