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D( x )
0.3/x < 0
0.3/x = 0
x = 0
0.3/x < 0
0.3/x < 0
0.3*x^-1 < 0
0.3*x^-1 < 0 // : 0.3
x^-1 < 0/0.3
x^-1 < 0
1/(x^1) < 0
x <> 0
1/(x^1) < 0 // * x^2
(x^2)/(x^1) < 0
x^1 < 0
x < 0
x in (-oo:0)
0.3/x = 0
0.3/x = 0
0.3*x^-1 = 0 // : 0.3
x^-1 = 0
x należy do O
x = 0
x = 0
x in (0:+oo)
1/8 = (0.3/x)^-1.2 // - (0.3/x)^-1.2
1/8-(0.3/x)^-1.2 = 0
-0.3^-1.2*x^1.2 = -1/8 // : -0.3^-1.2
x^1.2 = 1/8/(0.3^-1.2)
x = (1/8/(0.3^-1.2))^(1/0.2)
x = (1/8/(0.3^-1.2))^(1/0.2)
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