Stability

Consider the first-order system (1.1) x ′ = f ( x , t )   ,       https://s3-euw1-ap-pe-df-pch-content-public-u.s3.eu-west-1.amazonaws.com/9780203745489/06038f90-60d6-4e15-b269-9f84a6aec4cc/content/eq593.tif"/>