Com relação ao Plano Real e seus impactos sobre a economia, é correto afirmar que:

Item 3 - Em comparação com o regime de bandas cambiais vigente até a desvalorização de 1999, o estabelecimento do sistema de metas inflacionárias aumentou a necessidade de se manter um volume elevado de reservas.

Com relação ao Plano Real e seus impactos sobre a economia, é correto afirmar que:

Item 1 - Com a introdução da nova moeda o governo optou por uma política de câmbio fixo como forma de garantir a estabilidade de preços.

Avalie a afirmativa:

Item 3 - A equação geral do plano tangente a f(x,y) = !$ \alpha \, log \, \chi \, + \, \beta \, log \, y !$ passando pelo ponto (1,1) é g(x,y) = !$ \alpha \, \chi \, + \, \beta \, y, !$ em que log denota o logaritmo neperiano .

A partir do segundo semestre de 1980 a economia brasileira foi submetida a um ajuste externo que teve conseqüências recessivas até 1983.

Sobre este período é correto afirmar:

Item 1 - A política de contenção salarial foi um dos componentes do ajuste externo.

During the Great Depression, American policymakers decided that speculation was best controlled by limiting the speculators’ access to financial leverage. As a result, margin loans were limited by federal law to 50 percent of stock values. This policy has since broken down with the advent of financial derivatives, as the case of LTCM demonstrates in extremis. (Note: LTCM stands for Long-Term Capital Management, a nearly bankrupt hedge fund bailed out by the Federal Reserve Bank of New York in 1998). It has recently been proposed that derivatives should be subject to the same margin limits as conventional stock purchases. Restrictions on speculators’ ability to achieve almost limitless leverage through the derivatives market might lessen the risk of systemic crisis in the financial world. Improved information in the almost unregulated derivatives world would also hinder excessive accumulation of debt, such as occurred at LTCM.

According to the text, Depression Era policy of limiting speculators’ access to financial leverage

Item 4 - justifies leaving the derivatives markets unfettered.

Com base no jogo na forma extensiva apresentado abaixo, é correto dizer que:

Item 2 - Todo equilíbrio de Nash desse jogo é um equilíbrio perfeito em subjogos.

According to the text, speculation

Item 4 - broke the chains of government and ran amok.

Politicians and economists, pondering the problems caused by unfettered speculation, face an old dilemma. As Alexander Baring, head of the family lately brought down by Nick Leeson, remarked in 1825, any attempt to check speculation might be counterproductive: “the remedy would be worse than the disease, if, in putting a stop to this evil, they (the authorities) put a stop to the spirit of enterprise.”

According to the text,

Item 0 - politicians and economists constantly worry about unfettered speculation;

Avalie a afirmativa:

Item 2 - A função !$ f \, ( \chi, \, y) \, = \, { \large \chi^2 y^2 \over \chi^4 \, + \, y^4} !$ é contínua em (0,0)