Odpowiedź:
[tex]S_{10} =90[/tex]
Szczegółowe wyjaśnienie:
[tex]a_{1} = 9[/tex] , q = 1
[tex]a_{2} = a_{1} *q = 9 * 1 = 9[/tex]
[tex]a_{3} = a_{2} *q = 9 * 1 = 9[/tex]
[tex]a_{4} = a_{3} *q = 9 * 1 = 9[/tex]
[tex]a_{5} = a_{4} *q = 9 * 1 = 9[/tex]
[tex]a_{6} = a_{5} *q = 9 * 1 = 9[/tex]
[tex]a_{7} = a_{6} *q = 9 * 1 = 9[/tex]
[tex]a_{8} = a_{7} *q = 9 * 1 = 9[/tex]
[tex]a_{9} = a_{8} *q = 9 * 1 = 9[/tex]
[tex]a_{10} = a_{9} *q = 9 * 1 = 9[/tex]
