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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3080/8.314)*(1/275-(1/x)) = 0
(3080/8.314)*(1/275-x^-1) = 0
370.45946596*(1/275-x^-1) = 0
-1*x^-1 = -1/275 // : -1
x^-1 = 1/275
-1 < 0
1/(x^1) = 1/275 // * x^1
1 = 1/275*x^1 // : 1/275
275 = x^1
x = 275
x = 275
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