Y=((x-20)/x)-0.25

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Solution for Y=((x-20)/x)-0.25 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

Y = (x-20)/x-0.25 // - (x-20)/x-0.25

Y-((x-20)/x)+0.25 = 0

(-1*(x-20))/x+Y+0.25 = 0

(-1*(x-20))/x+(Y*x)/x+(0.25*x)/x = 0

Y*x-1*(x-20)+0.25*x = 0

Y*x-x+0.25*x+20 = 0

Y*x-0.75*x+20 = 0

Y*x-0.75*x+20 = 0

20-0.75*x = 0 // - 20

-0.75*x = -20 // : -0.75

x = -20/(-0.75)

x = 26.66666667

x-26.66666667 = 0

(x-26.66666667)/x = 0

(x-26.66666667)/x = 0 // * x

x-26.66666667 = 0

x-26.66666667 = 0 // + 26.66666667

x = 26.66666667

x = 26.66666667

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