7/2a*5/a^2

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Solution for 7/2a*5/a^2 equation: 


D( a )

a^2 = 0

a^2 = 0

a^2 = 0

1*a^2 = 0 // : 1

a^2 = 0

a = 0

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

(5*(7/2)*a)/(a^2) = 0

35/2*a^-1 = 0 // : 35/2

a^-1 = 0

a należy do O

a belongs to the empty set

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