Question

What is the domain of y = sec(x)? All real numbers

All real numbers except npi+pi/2, where n is any integer
All real numbers except not, where n is any integer
All real number except npi and npi+pi/2, where n is any integer

Answer 1

y is an elementary of real number

Explanation:

it is where y is an element except not where n is any integer because y only goes up and down

Answer 2

C on edge

Explanation:

took test