Question

determine o domínio da função y= SEC (x+ pi/8)​

Answer 1

y = sec (x + π/8)

y = 1 / cos (x + π/8)

...

cos (x + π/8) ≠ 0

x + π/8 ≠ π/2

x ≠ π/2 - π/8

x ≠ 3π/8

D (f) = ℝ - { 3π/8 + π. n } (n ∈ ℤ )