Question 1174086
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It is clear that a general public person (like me) and/or a school student will be perplexed with this question, 


because he (or she, or me) even doesn't know to which subject this question does relate, 
and why this question did arrive to this forum . . . 



Therefore, my question to the tutor @math_helper, whose knowledge admire me, is 


    to which area/subject/speciality this question does really relate ?
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Thank you.