Learning Mathematics for IIT JEE
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Wednesday, December 17, 2008
Relations between roots and coefficients
S1 = α1+α2+...+αn = -a1/a0
S2 = α1α2 + α1α3+... = Σαiαj; i≠j = (-1)² (a2/a0)
Sn = α1α2...αn = (-1)
^{n}
(const. term/a0) {constant term = an)
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