Step-by-step explanation:
a battery
b windmill
e river
f helicopter
B is 2,2 A is -1,1 c is 2,-1
Answer:
It is proved that A is idempotent if and only if
is idempotent.
Step-by-step explanation:
Case-1 : First assume that A is idempotent that is,
. We have to show by using this
. So,

Thus
is idempotent.
Case-2 :
Conversly, assuming
is idempotent, thet is,
. We have to show
. So,


Thus A is idempotent. Hence proved.
Answer:
Step-by-step explanation:
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