Question Number 66601 by aliesam last updated on 17/Aug/19
Commented by kaivan.ahmadi last updated on 17/Aug/19
$$\mathrm{14} \\ $$$${D}=\left(\mathrm{0},+\infty\right)\Rightarrow{c}\:{is}\:{true} \\ $$
Answered by Rio Michael last updated on 17/Aug/19
$$\left.\mathrm{12}\right)\:{A} \\ $$$$\left.\mathrm{13}\right)\:{A} \\ $$