Figure 1From: On bounds for solutions of monotonic first order difference-differential systemsThe characteristic root λ+( x ) divides the plane in two regions: h '( x ) > 0 if 0 < h ( x ) < λ+( x ) and h' ( x ) < 0 if h ( x ) > λ+( x ). The graph of h1(x) corresponds to the situation described in Theorem 1 while h2(x) corresponds to Theorem 2 when an extremum is reached.Back to article page