(2^-1+5^-1)^-1 eching

$$( 2 ^ { - 1 } + 5 ^ { - 1 } ) ^ { - 1 }$$

Baholash

$$\frac{10}{7}\approx 1,428571429$$

Yechim qadamlari

-1 daraja ko‘rsatkichini 2 ga hisoblang va \frac{1}{2} ni qiymatni oling.

$$\left(\frac{1}{2}+5^{-1}\right)^{-1}$$

-1 daraja ko‘rsatkichini 5 ga hisoblang va \frac{1}{5} ni qiymatni oling.

$$\left(\frac{1}{2}+\frac{1}{5}\right)^{-1}$$

\frac{7}{10} olish uchun \frac{1}{2} va \frac{1}{5}'ni qo'shing.

$$\left(\frac{7}{10}\right)^{-1}$$

-1 daraja ko‘rsatkichini \frac{7}{10} ga hisoblang va \frac{10}{7} ni qiymatni oling.

$$\frac{10}{7}$$

Omil

$$\frac{2 \cdot 5}{7} = 1\frac{3}{7} = 1,4285714285714286$$