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Sir where is the 2cos x camping from

very good explanation thank you

Thank you

Put more work on the graphic, it's poor

Here to support my G ❤

Your voice is too low

Bro is good

Thank you so much sir

You're the best

why didn't u put 2 to the power k+1 at the first 2 where there is 2 k only?

The sound is low, thanks for the trigs🫡

On the first question 1 is not a vertical phase shift?

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