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D( c )
c = 0
c = 0
c = 0
c in (-oo:0) U (0:+oo)
24.344/c+3.2 = 10 // - 10
24.344/c-10+3.2 = 0
24.344*c^-1 = 6.8 // : 24.344
c^-1 = 0.27932961
-1 < 0
1/(c^1) = 0.27932961 // * c^1
1 = 0.27932961*c^1 // : 0.27932961
3.57999999 = c^1
c = 3.57999999
c = 3.57999999
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