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let f(x) = \begincases -x^2+2, x <= 1 }, {x, x > 1 \endcases. Analise a diferenciabilidade em x = 1
let f(x) = \begincases -x^2+2, x <= 1 }, {x, x > 1 \endcases. Analise a diferenciabilidade em x = 1
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