7x/(49x^2-7x)

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Solution for 7x/(49x^2-7x) equation: 


D( x )

49*x^2-(7*x) = 0

49*x^2-(7*x) = 0

49*x^2-(7*x) = 0

49*x^2-7*x = 0

49*x^2-7*x = 0

DELTA = (-7)^2-(0*4*49)

DELTA = 49

DELTA > 0

x = (49^(1/2)+7)/(2*49) or x = (7-49^(1/2))/(2*49)

x = 1/7 or x = 0

x in (-oo:0) U (0:1/7) U (1/7:+oo)

(7*x)/(49*x^2-(7*x)) = 0

(7*x)/(49*x^2-7*x) = 0

49*x^2-7*x = 0

7*x*(7*x-1) = 0

7*x-1 = 0 // + 1

7*x = 1 // : 7

x = 1/7

7*x*(x-1/7) = 0

(7*x)/(7*x*(x-1/7)) = 0

7*x = 0 // : 7

x = 0

x in { 0} 

x belongs to the empty set

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