Determine whether the following are subspaces of C[-1,1]:
d) The set of functions f in C[-1,1] such that f(-1)=0 AND f(1)=0
The Attempt at a Solution
I did the question with 'OR', but I don't think I can find the functions.
I am not sure I can use x2 here ...
say f2(x)=f1(x)=x2-1 will give me 0 when x=-1 or x=1