Find the Domain f(x)=sec(2x)

Find the Domain f(x)=sec(2x)
Set the argument in equal to to find where the expression is undefined.
, for any integer
Divide each term by and simplify.
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Divide each term in by .
Cancel the common factor of .
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Cancel the common factor.
Divide by .
Multiply .
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Multiply and .
Multiply by .
The domain is all values of that make the expression defined.
Set-Builder Notation:
, for any integer
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Name

Name one billion nine hundred fifty-three million seventy-six thousand eight hundred sixty-seven

Interesting facts

  • 1953076867 has 8 divisors, whose sum is 2265403136
  • The reverse of 1953076867 is 7686703591
  • Previous prime number is 67

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 52
  • Digital Root 7

Name

Name one hundred ninety-eight million two hundred seventy-seven thousand nine hundred ninety-two

Interesting facts

  • 198277992 has 128 divisors, whose sum is 821664000
  • The reverse of 198277992 is 299772891
  • Previous prime number is 79

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 9
  • Sum of Digits 54
  • Digital Root 9

Name

Name eight hundred seventeen million eight hundred twelve thousand one hundred thirteen

Interesting facts

  • 817812113 has 4 divisors, whose sum is 818039280
  • The reverse of 817812113 is 311218718
  • Previous prime number is 3659

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 32
  • Digital Root 5