Question

Dada a PÁ (-4-2-0,2…) calcule a 40

Answer 1

$> resolucao \\ \\ \geqslant pa \: ( \: - 4 \: . \: - 2 \: . \: 0 \: . \: 2 \: ...) \\ \\ r = a2 - a1 \\ r = - 2 - ( - 4) \\ r = - 2 + 4 \\ r = 2 \\ \\ \\ \geqslant \: o \: 40 \: termo \: da \: pa \\ \\ \\ an = a1 + (n - 1)r \\ an = - 4 + (40 - 1)2 \\ an = - 4 + 39 \times 2 \\ an = - 4 + 78 \\ an = 74 \\ \\ \\ > < > < > < > < > < > < > >$