prove δ[(x-a)(x-b)]=1/|a-b| where δ is Dirac delta fuction i need details can some one help????
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Originally Posted by doaa prove δ[(x-a)(x-b)]=1/|a-b| where δ is Dirac delta fuction i need details can some one help???? I think that $\displaystyle \delta (f(x)) = \sum_k \frac{\delta (x-x_k)}{f'(x_k)}$ where $\displaystyle x_k$ are the roots.
ok i used it but it does not work with me i raised to this: [δ(x-a)+δ(x-b)]/(a-b) bbut i dont konw what then
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