Domínio de funções

Conjunto dos valores reais de $t$t tais que $t\geq\dfrac{13}{6}$t, is greater than or equal to, start fraction, 13, divided by, 6, end fraction

Conjunto dos valores reais de $t$t tais que $t\geq\dfrac{6}{13}$t, is greater than or equal to, start fraction, 6, divided by, 13, end fraction

Conjunto dos valores reais de $t$t tais que $t\leq\dfrac{13}{6}$t, is less than or equal to, start fraction, 13, divided by, 6, end fraction

Conjunto de todos os valores reais de $t$t