i have to prove that is a subspace.
i took two elements from (a), and and i must have .
so i wrote
where i went wrong ?
i know that can be written as ,but i want to know where was my error.
thanks.
i have to prove that is a subspace.
i took two elements from (a), and and i must have .
so i wrote
where i went wrong ?
i know that can be written as ,but i want to know where was my error.
thanks.
No where went you wrong: ...why you tried to make a substraction there I can't say.