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  2. List of South Korean visas - Wikipedia

    en.wikipedia.org/wiki/List_of_South_Korean_visas

    C-3-2: Group Tourist; C-3-3: Medical Tourist; enter Korea for medical treatment; C-3-4: Business Visitor (General) C-3-5: Business Visitor (Agreement); short-term business in accordance with an agreement with ROK; C-3-6: Business Visitor (Sponsored); invited by a company or an organization designated by the Minister of Justice of ROK; C-3-8 ...

  3. Visa policy of South Korea - Wikipedia

    en.wikipedia.org/wiki/Visa_policy_of_South_Korea

    The Korea Electronic Travel Authorization (K-ETA) is a mandatory requirement for travelers from visa exemption countries visiting South Korea, which came into effect on 1 September 2021. [3] Travelers holding ordinary passports from eligible countries and territories must obtain a K-ETA before their departure to South Korea.

  4. List of integrals of irrational functions - Wikipedia

    en.wikipedia.org/wiki/List_of_integrals_of...

    For a complete list of integral functions, see lists of integrals. Throughout this article the constant of integration is omitted for brevity. Integrals involving r = √ a 2 + x 2

  5. File:Visa Requirements for South Korean Nationals.svg

    en.wikipedia.org/wiki/File:Visa_Requirements_for...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  6. Visa requirements for South Korean citizens - Wikipedia

    en.wikipedia.org/wiki/Visa_requirements_for...

    Visa requirements for South Korean citizens are administrative entry restrictions by the authorities of other states placed on citizens of South Korea. As of 2025, South Korean citizens had visa-free or visa on arrival access to 192 countries and territories, ranking the South Korean passport 3rd in the world according to the Henley Passport ...

  7. File:Visa requirements for South Korean citizens.svg - Wikipedia

    en.wikipedia.org/wiki/File:Visa_requirements_for...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  8. Immigration to South Korea - Wikipedia

    en.wikipedia.org/wiki/Immigration_to_South_Korea

    The S-3 work visa is available to foreigners employed by Korean employers. The D-2 student visa is available to foreigners enrolled in an eligible university or language program. South Korea also offers a temporary resident visa which allows stays for up to five years, known as the F-4 visa.

  9. Trigonometric substitution - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_substitution

    In the integral , we may use = ⁡, = ⁡, = ⁡. Then, = ⁡ ⁡ = ⁡ (⁡) = ⁡ ⁡ = = + = ⁡ +. The above step requires that > and ⁡ > We can choose to be the principal root of , and impose the restriction / < < / by using the inverse sine function.