Hi people,

$\displaystyle F_1$={ f$\displaystyle \in$ F($\displaystyle \mathbb{R};\mathbb{R}$)/ f(0)=f(1)}

$\displaystyle F_2$={ f$\displaystyle \in$ F($\displaystyle \mathbb{R};\mathbb{R}$)/ f(2)=0}

I have to check if $\displaystyle F_1$ anf $\displaystyle F_2$ are linear subspaces of F($\displaystyle \mathbb{R};\mathbb{R}$) or not????

Please help???