9/7.2=3.2/k

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Solution for 9/7.2=3.2/k equation: 


D( k )

k = 0

k = 0

k = 0

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

9/7.2 = 3.2/k // - 3.2/k

9/7.2-(3.2/k) = 0

9/7.2-3.2*k^-1 = 0

-3.2*k^-1 = -1.25 // : -3.2

k^-1 = 0.390625

-1 < 0

1/(k^1) = 0.390625 // * k^1

1 = 0.390625*k^1 // : 0.390625

2.56 = k^1

k = 2.56

k = 2.56

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