7=42/v

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Solution for 7=42/v equation: 


D( v )

v = 0

v = 0

v = 0

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

7 = 42/v // - 42/v

7-(42/v) = 0

7-42*v^-1 = 0

-42*v^-1 = -7 // : -42

v^-1 = 1/6

-1 < 0

1/(v^1) = 1/6 // * v^1

1 = 1/6*v^1 // : 1/6

6 = v^1

v = 6

v = 6

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