How do you simplify the expression #arccos(cos ((7pi)/6))#?
Let y = cos x.
The period of cos x is
I make 'as is where is' inversion.
Referred to P.
Referred to Q,
Of course, the convention that
be broken here. for the sake of local 1-1 mapping in the neighbor
hood of Q. We cannot move to P saying that it is convention. It is
my opinion that any convention is not the rule, for all
It is befitting to adopt
(x, y), with 1-1 correspondence at the point of continuity...