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D( L )
L = 0
L = 0
L = 0
L in (-oo:0) U (0:+oo)
6/L = 5.28 // - 5.28
6/L-5.28 = 0
6*L^-1 = 5.28 // : 6
L^-1 = 0.88
-1 < 0
1/(L^1) = 0.88 // * L^1
1 = 0.88*L^1 // : 0.88
1.13636364 = L^1
L = 1.13636364
L = 1.13636364
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