2.4/1.8=7.2/k

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Solution for 2.4/1.8=7.2/k equation: 


D( k )

k = 0

k = 0

k = 0

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

2.4/1.8 = 7.2/k // - 7.2/k

2.4/1.8-(7.2/k) = 0

2.4/1.8-7.2*k^-1 = 0

-7.2*k^-1 = -1.33333333 // : -7.2

k^-1 = 0.18518518

-1 < 0

1/(k^1) = 0.18518518 // * k^1

1 = 0.18518518*k^1 // : 0.18518518

5.40000015 = k^1

k = 5.40000015

k = 5.40000015

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