Examlex
Estimate the intervals where the function shown below is concave up and/or concave down.
Latin America
A region in the western hemisphere, comprising countries where Romance languages (primarily Spanish and Portuguese) are predominant, known for its diverse cultures, historical ties to colonialism, and significant natural resources.
Iran Arms Deal
Refers to a controversial arrangement, officially known as the Iran-Contra affair, where the United States secretly facilitated the sale of arms to Iran, which was then under an arms embargo, during the 1980s.
Oliver North
A former United States Marine Corps lieutenant colonel involved in the Iran-Contra affair in the 1980s, which was a political scandal involving arms sales.
Sandinista Government
The government of Nicaragua from 1979 to 1990 led by the Sandinista National Liberation Front, a socialist political party.
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