1/7y^2=-y-1/28

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Solution for 1/7y^2=-y-1/28 equation: 


y in (-oo:+oo)

(1/7)*y^2 = -y-(1/28) // + -y-(1/28)

(1/7)*y^2+y+1/28 = 0

1/7*y^2+y+1/28 = 0

DELTA = 1^2-(1/28*1/7*4)

DELTA = 48/49

DELTA > 0

y = ((48/49)^(1/2)-1)/(1/7*2) or y = (-(48/49)^(1/2)-1)/(1/7*2)

y = 7/2*((48/49)^(1/2)-1) or y = -7/2*((48/49)^(1/2)+1)

y in { -7/2*((48/49)^(1/2)+1), 7/2*((48/49)^(1/2)-1) }

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