7=-3/v-5

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Solution for 7=-3/v-5 equation: 


D( v )

v = 0

v = 0

v = 0

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

7 = -3/v-5 // + -3/v-5

5-(-3/v)+7 = 0

3*v^-1+5+7 = 0

3*v^-1 = -12 // : 3

v^-1 = -4

-1 < 0

1/(v^1) = -4 // * v^1

1 = -4*v^1 // : -4

-1/4 = v^1

v = -1/4

v = -1/4

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