If the continuous function u satisfies the inequality $\mathrm{u}(\mathrm{x},\mathrm{y})\le \mathrm{f}(\mathrm{x},\mathrm{y})+{\int }_{0}^{\mathrm{x}}{\int }_{0 ...
Inequalities are the relationships between two expressions which are not equal to one another. The symbols used for inequalities are <, >, ≤, ≥. \(7 \textgreater x\) reads as '7 is greater than \(x\)' ...