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Expert: - 7/28/2009


Question
what is the domain of f(x)=secx

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Questioner: bob
Country: United States
Category: Advanced Math
Private: Yes
Subject: ap calculus
Question: what is the domain of f(x)=secx
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Since  sec x = 1/cos x, and  cos x = 0 whenever x = pi/2 or 3pi/2 +- 2npi, those are the numbers EXCLUDED from the domain of sec x.

So that's it:

Domain is all  x /= pi/2 +- 2npi, and x /= 3pi/2 +- 2npi.  

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