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        <lastmod>2024-01-10T11:40:07.407281829Z</lastmod>
        
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            <Attribute name="title">Des systèmes d&#39;équation qui ont une infinité de solutions et des systèmes qui n&#39;en ont aucune</Attribute>
            <Attribute name="description">Traduire et résoudre des problèmes concrets par un système d&#39;équations ayant une infinité de couples solution ou aucun couple solution.</Attribute>
            <Attribute name="author">Tomer Gal</Attribute>
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