5a^10/7(a^-10/7+a^-3/7)

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Solution for 5a^10/7(a^-10/7+a^-3/7) equation: 


D( a )

a = 0

a = 0

a = 0

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

((5*a^10)/7)*((a^-3)/7+(a^-10)/7) = 0

5/7*a^10*(1/7*a^-3+1/7*a^-10) = 0

1/7*a^-3+1/7*a^-10 = 0

1/7*a^-3*(a^-7+1) = 0

1*a^-7 = -1 // : 1

a^-7 = -1

-7 < 0

1/(a^7) = -1 // * a^7

1 = -1*a^7 // : -1

-1 = a^7

a^7 = -1 // ^ 1/7

a = -1

1/7*a^-3*(a+1) = 0

1/7*5/7*a^-3*a^10*(a+1) = 0

( 1/7*a^-3 )

1/7*a^-3 = 0 // : 1/7

a^-3 = 0

a naleu017Cy do O

( 5/7*a^10 )

5/7*a^10 = 0 // : 5/7

a^10 = 0

a = 0

( a+1 )

a+1 = 0 // - 1

a = -1

a in { 0} 

a = -1

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