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D( x )
14*a^3*x = 0
7*a^2 = 0
(x^5)/(14*a^3*x) = 0
14*a^3*x = 0
14*a^3*x = 0
14*a^3*x = 0 // : 14*a^3
x = 0
7*a^2 = 0
7*a^2 = 0
7*a^2 = 0
x naleu017Cy do R
(x^5)/(14*a^3*x) = 0
(x^5)/(14*a^3*x) = 0
1/14*a^-3*x^4 = 0 // : 1/14*a^-3
x^4 = 0
x = 0
x belongs to the empty set
((2*x)/(7*a^2))/((x^5)/(14*a^3*x)) = 0
x belongs to the empty set
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