Question

2(elevado f+1) = a raiz de 8 elevado a 4

Answer 1

2 ^ (f+1) = 8 ^ 4/2
2 ^ (f+1) = 8 ^ 2
2 ^ (f+1) = 64
2 ^ (f+1) = 2 ^ 6

logo,
f + 1 = 6
f = 5