Dirichlet integral. [duplicate]
I want to prove ∫∞0sinxxdx=π2, and ∫∞0|sinx|xdx→∞. And I found in wikipedia, but ...
I want to prove ∫∞0sinxxdx=π2, and ∫∞0|sinx|xdx→∞. And I found in wikipedia, but ...
I have injection f:A→B and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...
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