Question

determinati modulul nr:
a= 1/2(-1)^n - 1/3(-1)^n+1 + 1/6(-1)^n+2, n E N*

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Answer 1

[tex]|a|=|(-1)^n\cdot ( \frac{1}{2}+ \frac{1}{3} + \frac{1}{6} ) |\\ |a|=\frac{1}{2}+ \frac{1}{3} + \frac{1}{6}=\frac{3}{6}+ \frac{2}{6} + \frac{1}{6}=1[/tex]Scrie răspunsul tău aici