Question 1

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Amb la successió begin mathsize 12px style bold a subscript bold n bold space bold equals bold space begin bold style fraction numerator 3 times n minus 3 over denominator 5 times n plus 15 end fraction end style bold space bold space bold space bold i bold space bold el bold space bold nombre bold space bold space bold F bold space bold equals bold space begin bold style 3 over 5 end style end style

a) Calcula F - an: begin mathsize 12px style begin bold style 3 over 5 end style bold space bold minus bold space begin bold style fraction numerator 3 times n minus 3 over denominator 5 times n plus 15 end fraction end style end style.  Format de la resposta: begin mathsize 12px style fraction numerator 6 over denominator 3 n plus 5 end fraction end style


b) begin mathsize 12px style bold italic F bold space bold equals bold space bold space begin bold style 3 over 5 end style end style és fita superior? (S/N) 




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