α α αα₯(β€οΈ)α«αα αα ααα αα π« ααα«ααα΅ αα«α΅ ααπ―βΌοΈ αα΅ α«ααα¬ ααα½ α α ααα΅ α°α₯α΅αααα₯ α£α΅ααα α αα°αααα π·always positive