4. State whether the following are true or false. Justify your answer.
The value of
increases as
increases.
The value of
increases as
increases.
for all values of
.
is not defined for
(i) False,
Let A = B =
Then,
(ii) True,
Take
whent
= 0 then zero(0),
= 30 then value of
is 1/2 = 0.5
= 45 then value of
is 0.707
(iii) False,
(iv) False,
Let = 0
(v) True,
(not defined)