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Physicsissuef
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Homework Statement
I solve the equation of one function, which comes out with two solutions:
1. cosx=-1, x=(2k+1)[itex]\pi[/itex] ; 2. cosx=1, x=2k[itex]\pi[/itex] (k [itex]\in \mathbb{Z})[/itex]
Homework Equations
The Attempt at a Solution
Now, we need to find union between the two of the solutions:
{[itex]\pi + 2k\pi[/itex]}[itex]\cup[/itex]{[itex]2k\pi [/itex]}= ??
What will be the solution of this one?
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