The KortwegDeVries equation u t + u u x + 3u x3 = 0 arises in modeling shallow water waves (called solitons). Show that u(x, t) = 12a2sech2(ax 4a3t) is a solution to the KortwegDeVries equation (see the Internet supplement).
March 22, 2016 Political Development in Latin America I ● Economists looking at geography say temperate and more settled zones will develop economic and political institutions ● Puzzles: ○ Why contrasting political economic development present within New World ■ USA and Canada TOP Argentina and Uruguay BEST IN SOUTH AMERICA Colombia, Peru and Venezuela MIDDLE Bolivia, Paraguay and Ecuador BOTTOM ■ Brazil has different levels of development based on region ● Ecological: tropical vs temperate ○ Tropical less settled so extractive, temperate gets settle so good economy ○ Problem that remains is fact that you see different between temperate
