8.44=(3900d+1000)/(3d^2+100)

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Solution for 8.44=(3900d+1000)/(3d^2+100) equation: 


D( d )

3*d^2+100 = 0

3*d^2+100 = 0

3*d^2+100 = 0

3*d^2 = -100 // : 3

d^2 = -100/3

d in (-oo:+oo)

8.44 = (3900*d+1000)/(3*d^2+100) // - (3900*d+1000)/(3*d^2+100)

8.44-((3900*d+1000)/(3*d^2+100)) = 0

(-1*(3900*d+1000))/(3*d^2+100)+8.44 = 0

(-1*(3900*d+1000))/(3*d^2+100)+(8.44*(3*d^2+100))/(3*d^2+100) = 0

8.44*(3*d^2+100)-1*(3900*d+1000) = 0

25.32*d^2-3900*d-156 = 0

25.32*d^2-3900*d-156 = 0

25.32*d^2-3900*d-156 = 0

DELTA = (-3900)^2-(-156*4*25.32)

DELTA = 15225799.68

DELTA > 0

d = (15225799.68^(1/2)+3900)/(2*25.32) or d = (3900-15225799.68^(1/2))/(2*25.32)

d = 0.01974724*(15225799.68^(1/2)+3900) or d = 0.01974724*(3900-15225799.68^(1/2))

(d-0.01974724*(3900-15225799.68^(1/2)))*(d-0.01974724*(15225799.68^(1/2)+3900)) = 0

((d-0.01974724*(3900-15225799.68^(1/2)))*(d-0.01974724*(15225799.68^(1/2)+3900)))/(3*d^2+100) = 0

((d-0.01974724*(3900-15225799.68^(1/2)))*(d-0.01974724*(15225799.68^(1/2)+3900)))/(3*d^2+100) = 0 // * 3*d^2+100

(d-0.01974724*(3900-15225799.68^(1/2)))*(d-0.01974724*(15225799.68^(1/2)+3900)) = 0

( d-0.01974724*(15225799.68^(1/2)+3900) )

d-0.01974724*(15225799.68^(1/2)+3900) = 0 // + -0.01974724*(15225799.68^(1/2)+3900)

d = -(-0.01974724*(15225799.68^(1/2)+3900))

d = 0.01974724*(15225799.68^(1/2)+3900)

( d-0.01974724*(3900-15225799.68^(1/2)) )

d-0.01974724*(3900-15225799.68^(1/2)) = 0 // + -0.01974724*(3900-15225799.68^(1/2))

d = -(-0.01974724*(3900-15225799.68^(1/2)))

d = 0.01974724*(3900-15225799.68^(1/2))

d in { 0.01974724*(15225799.68^(1/2)+3900), 0.01974724*(3900-15225799.68^(1/2)) }

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