7=((x/12)^(1/20))-1

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Solution for 7=((x/12)^(1/20))-1 equation: 


D( x )

x/12 < 0

x/12 < 0

x/12 < 0

1/12*x+0 < 0 // - 0

1/12*x < 0 // : 1/12

x < 0/1/12

x < 0

x in <0:+oo)

7 = (x/12)^(1/20)-1 // - (x/12)^(1/20)-1

1-(x/12)^(1/20)+7 = 0

-(1/12)^(1/20)*x^(1/20) = -8 // : -(1/12)^(1/20)

x^(1/20) = 8/((1/12)^(1/20))

( 8/((1/12)^(1/20)) < 0 i 1/20 in (0:1) ) => x należy do O

x belongs to the empty set

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