Question 790518
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The difference between *[tex \Large a_4] and *[tex \Large a_3] is 12 from the sequence of first differences, and the sum of *[tex \Large a_4] and *[tex \Large a_3] is given as 40.  That is a 2X2 system.  Solve the 2X2 system for *[tex \Large a_4] and *[tex \Large a_3], then the rest should just fall into place.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
<font face="Math1" size="+2">Egw to Beta kai to Sigma</font>
My calculator said it, I believe it, that settles it
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