0 \\ a < m = > {a}^{2} - {m}^{2} < 0 ((a-m)(a+m)<0) \\ \frac{ {a}^{2} - {m}^{2} }{ma} < 0 = > \frac{a}{m} < \frac{m}{a} " alt=" \frac{a}{m} - \frac{m}{a} = \frac{{a}^{2} - {m}^{2} }{ma} \\ \\ ma > 0 \\ a < m = > {a}^{2} - {m}^{2} < 0 ((a-m)(a+m)<0) \\ \frac{ {a}^{2} - {m}^{2} }{ma} < 0 = > \frac{a}{m} < \frac{m}{a} " align="absmiddle" class="latex-formula">