Dirac delta function quadratic equations

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Equ. #1:

Equ. #2:

Equ. #3:

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Equ. #6:

Equ. #7:

Equ. #8:

Equ. #9:

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Ineq. #2:

Ineq. #3:

Ineq. #4:

Ineq. #5:

Ineq. #6:

Ineq. #7:

Ineq. #8:

Ineq. #9:

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