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Are you not in Russia?
This site accepts any cards from Russian Federation banks and "Mir" (including Belarus and Kazakhstan). For payment with Visa/Mastercard cards from other countries, go to the international version.
Triangular region bounded by \(x=1\), \(y=0\) and \(x+y=2\)
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Triangular region bounded by \(x=1\), \(y=0\) and \(x+y=2\)
