ln(7x/3)

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Solution for ln(7x/3) equation: 


D( x )

(7*x)/3 <= 0

(7*x)/3 <= 0

(7*x)/3 <= 0

7/3*x+0 <= 0 // - 0

7/3*x <= 0 // : 7/3

x <= 0/7/3

x <= 0

x in (0:+oo)

ln((7*x)/3) = 0

ln((7*x)/3) = ln(e^0)

(7*x)/3 = e^0

(7*x)/3-e^0 = 0

7/3*x-1 = 0 // + 1

7/3*x = 1 // : 7/3

x = 1/7/3

x = 3/7

x = 3/7

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