Question

45б! Вычисли значение функции y=(1/5)^s

Answer 1

$y=(\frac{1}{5})^s\\\\a)\ \ \ s=2:\ \ \ y=(\frac{1}{5})^2=\frac{1^2}{5^2}=\frac{1}{25}\\\\b)\ \ \ s=-3:\ \ \ y=(\frac{1}{5})^{-3}=(\frac{5}{1})^{3}=5^3=125\\\\c)\ \ \ s:=-4\frac{1}{2}:\ \ \ y=(\frac{1}{5})^{-4\frac{1}{2}}=(\frac{5}{1})^{4\frac{1}{2}}=5^{4\frac{1}{2}}=5^4*5^{\frac{1}{2}}=625\sqrt{5}$