Question

determinar o 100 termo da progressão geométrica (7,21,63...)

Answer 1

$a_n=a_1*q^{n-1}\\ \\ a_{100}=7*3^{99}=\\ \\ 1202547548374693105751742636119782969638250884669$

Answer 2

$A_n = a_1.q^{(n-1)} \\ \\ a_{100} = 7.3^{(100-1)} \\ \\ a_{100} = 7.3^{99} \\ \\ a_{100} = 7.110968209248 \\ \\ a_{100} = 776777464734$