Avalie as afirmativas:

Dada a matriz !$ A \, = \, \begin {pmatrix} 1 \,\, 2 \,\, 3 \,\, 4 \\ 0 \,\, 5 \,\, 6 \,\, 7 \\ 0 \,\, 0 \,\, 8 \,\, 9 \\ 0 \,\, 0 \,\, 0 \,\, 10 \end {pmatrix} !$

Item 1 - Se !$ \{ \lambda_1, \, \lambda_2, \, \lambda_3, \, \lambda_4 \} !$ são os autovalores de A, então !$ \sum_{i=1}^4 \, \lambda_i^2 \, = !$ traço !$ (A^2). !$

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

Item 0 - O perfil de estratégias (a, (d, h, k)) corresponde a um equilíbrio perfeito em subjogos desse jogo.

The following statements are true:

Item 1 - Derivatives could be allowed to wither on the wine without posing further threats to consumers’ welfare.

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 3 - A política econômica provocou a queda do nível de investimento na economia.

Governments have frequently attempted to control speculation by outlawing its tools and practices. Yet on each occasion, speculators have found ways to circumvent regulations. They have also interpreted laws against speculation as a sign of weakness on the part of governments, which has caused them to step up their activities. Keynes whimsically proposed that speculation might be discouraged if people were forced to make investments, like marriage, for life (a solution which would have produced a lifetime of frustration for those unfortunate enough to make a poor initial choice). More seriously, he considered a penal rate of capital gains tax on short-term holdings. As we have seen, however, high rates of capital gains tax on short-term property investments in Japan actually stimulated the Tokyo property boom in the 1980s by reducing liquidity in the market. It is arguable that taxes on capital gains actually contribute to stock market bubbles since investors with large profits become reluctant to sell even when they believe stocks are overvalued. Keynes also suggested that a transaction tax be levied on U.S. share purchases on the grounds that “casinos should, in the public interest, be inaccessible and expensive.”

According to the text, governments

Item 4 - have often tried to harness speculation by making its tools and practices illegal.

Sobre a economia no Governo Kubitschek, é correto afirmar que:

Item 2 - A política cambial manteve o chamado “confisco cambial”, promovendo a transferência de renda do setor exportador para o setor industrial.

Entre os principais problemas associados à crise de 1962-1967, incluem-se:

Item 1 - a política monetária restritiva utilizada no Plano Trienal e no PAEG;