following vectors matlab

$($a$)a=[\frac{1}{5+5}\frac{1}{4+4}\frac{1}{3+3}\frac{1}{2+2}]$

$($b$)b=[5^5{4}^4{3}^3{2}^2]$

$($c$)c=[\frac{5}{\sqrt[\phantom{2}]{5}}\frac{4}{\sqrt[\phantom{2}]{4}}\frac{3}{\sqrt[\phantom{2}]{3}}\frac{2}{\sqrt[\phantom{2}]{2}}]$

$($d$)d=[\frac{5^2}{5^5}\frac{4^2}{4^4}\frac{3^2}{3^3}\frac{2^2}{2^2}]$