Nguyễn Hương Trà
Giới thiệu về bản thân
Ta có:
\(f \left(\right. a \left.\right) + f \left(\right. b \left.\right) = f \left(\right. a \left.\right) + f \left(\right. 1 - a \left.\right) = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10 0^{1 - a}}{10 0^{1 - a} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{\frac{100}{10 0^{a}}}{\frac{100}{10 0^{a}} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{100}{10 0^{a}} . \frac{10 0^{a}}{100 + 10.10 0^{a}} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10}{10 + 10 0^{a}} = \frac{10 0^{a} + 10}{10 + 10 0^{a}} = 1 \left(\right. đ p c m \left.\right)\)
Ta có:
\(f \left(\right. a \left.\right) + f \left(\right. b \left.\right) = f \left(\right. a \left.\right) + f \left(\right. 1 - a \left.\right) = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10 0^{1 - a}}{10 0^{1 - a} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{\frac{100}{10 0^{a}}}{\frac{100}{10 0^{a}} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{100}{10 0^{a}} . \frac{10 0^{a}}{100 + 10.10 0^{a}} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10}{10 + 10 0^{a}} = \frac{10 0^{a} + 10}{10 + 10 0^{a}} = 1 \left(\right. đ p c m \left.\right)\)
Ta có:
\(f \left(\right. a \left.\right) + f \left(\right. b \left.\right) = f \left(\right. a \left.\right) + f \left(\right. 1 - a \left.\right) = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10 0^{1 - a}}{10 0^{1 - a} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{\frac{100}{10 0^{a}}}{\frac{100}{10 0^{a}} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{100}{10 0^{a}} . \frac{10 0^{a}}{100 + 10.10 0^{a}} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10}{10 + 10 0^{a}} = \frac{10 0^{a} + 10}{10 + 10 0^{a}} = 1 \left(\right. đ p c m \left.\right)\)
Ta có:
\(f \left(\right. a \left.\right) + f \left(\right. b \left.\right) = f \left(\right. a \left.\right) + f \left(\right. 1 - a \left.\right) = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10 0^{1 - a}}{10 0^{1 - a} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{\frac{100}{10 0^{a}}}{\frac{100}{10 0^{a}} + 10} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{100}{10 0^{a}} . \frac{10 0^{a}}{100 + 10.10 0^{a}} = \frac{10 0^{a}}{10 0^{a} + 10} + \frac{10}{10 + 10 0^{a}} = \frac{10 0^{a} + 10}{10 + 10 0^{a}} = 1 \left(\right. đ p c m \left.\right)\)