Question 1: Given , , , find .
Answer:
Given , ,
Question 2: If , , , find , , .
Answer:
Given , ,
Now
Now
and
Question 3: If , , , then verify that: (i) (ii) (iii) .
Answer:
i) Given , ,
… i)
Now
and
… ii)
From i) and ii) we get
. Hence Proved.
ii) Given , ,
… … … … … i)
Now
… ii)
From i) and ii) we get
iii) Given , ,
… … … … … i)
Now
and
… ii)
From i) and ii) we get
Question 4: Let , , and . Verify that: (i) (ii)
Answer:
i) Given , , and
… … i)
… ii)
From i) and ii) we see
ii) Given , , and
… … …i)
Now,
and
… … … … … ii)
From i) and ii) we get
Question 5: If , and , find
(i) (ii) (iii) (iv)
Answer:
i) Given , and
ii) Given , and
iii) Given , and
iv) Given , and
Question 6: Prove that(i) (ii)
Answer:
i) Let be any arbitrary elements of
and
and
or
or
… … i)
Let be any arbitrary elements of
or
or
or
and
… … ii)
From i) and ii) we get
ii) Let be any arbitrary elements of
and
and
and
and
… … i)
Let be any arbitrary elements of
and
and
and
and
… … ii)
From i) and ii) we get
Question 7: If. and , prove that and .
Answer:
Let be any arbitrary elements of . Then
and … … … i)
Now,
and … … … ii)
and
Hence Proved.