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Linja 434:
Mid-diżugwaljanza
<center> <math>|f(x)| -|f(y)|\leq |f(x) -f(y)|\leq M_k -m_k </math></center>
għal kull <math>\displaystyle{x,y\in [x_{k-1},x_k]}</math>,
nikkonkludu li
<center> <math> {\tilde M}_k -{\tilde m}_k\leq M_k -m_k </math></center>