Question Number 201000 by mokys last updated on 27/Nov/23
$${find}\: \\ $$$$ \\ $$$$\left.\:\mathrm{1}\right)\left(\mathrm{0},\mathrm{2}\right)\:\cup\:\left\{\mathrm{3}\right\}\:\: \\ $$$$ \\ $$$$\left.\:\:\mathrm{2}\right)\left[\mathrm{0},\mathrm{2}\right]\:\cup\:\left\{\mathrm{3}\right\} \\ $$$$ \\ $$$$\left.\:\:\mathrm{3}\right)\:\left(−\mathrm{5},\mathrm{5}\right)\:\cup\:\left\{\mathrm{6}\right\} \\ $$$$\:\: \\ $$$$\left.\:\:\mathrm{4}\right)\:\left(−\mathrm{2}\:,\:\mathrm{2}\:\right)\:\cup\:\left[\mathrm{3},\mathrm{5}\right] \\ $$