Y by
Q) 1. Let
be external direct sum of vector spaces
and
over a field
.let
and 
show that
i)
and
is subspaces.
ii)
Q)2. Suppose
. Let
be the external direct sum of
and
. show that
is isomorphic to
under the correspondence 
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show that
i)


ii)

Q)2. Suppose







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