Foram encontradas 395 questões.
Assinale certo ou errado:
Item 2 - !$ \underset{x\rightarrow 1 }{\lim } {\large{x \ln(x) \over x^2-1}}=1 !$.
Provas
Questão presente nas seguintes provas
Assinale certo ou errado:
Item 0 - !$ \underset{x\rightarrow 5 }{\lim } \left[ {\large{(4x^2-100) \over x-5}} \right]=40 !$.
Provas
Questão presente nas seguintes provas
O 2º Governo Vargas (1951-54) adotou uma série de medidas que acabaram favorecendo o avanço da industrialização na segunda metade dos anos 1950. Incluem-se entre essas:
Item 3 - a progressiva liberalização da legislação sobre fluxo de capitais externos privados;
Provas
Questão presente nas seguintes provas
Indeed, accelerated resource degradation in DRAs is mainly the cumulative consequence of developed country policies that have led to (1) a tripling of world real interest rates between 1945-1974 and 1979-1993, and in the longer term, (2) falling and unstable relative farm prices, and (3) labor-displacing technical progress. In this chapter I set out reasons for believing that these international effects have been paramount.
In its analysis of the causes of natural resource degradation in DRAs, the text
Item 1 - singles out the tripling of world real interest rates as the chief cause of degradation;
Provas
Questão presente nas seguintes provas
Assinale certo ou errado:
Item 3 - A série !$ \sum\limits^{+ \infty}_{n=1} (-1)^{n+1} \cdot \large{\sqrt n \over 1+n} !$ converge.
Provas
Questão presente nas seguintes provas
In addition, I contend here that these technology and price incentives responsible for much resource degradation in DRAs (1) depend more on technology than on price; (2) inasmuch as they depend on price, depend substantially on interest rates; and (3) in both these respects, are largely exogenous to agents in developing countries. Economic agents in DRAs are in the great majority of cases price takers for interest rates and other environmentally critical prices, and also product takers for the technology mix. All this suggests that, although the explicit or implicit policy recommendations appearing throughout this volume are reasonable enough, their impact on rates of resource degradation in DRAs will be small, without appropriate changes in policy by the interest rate “price makers” and the technology “product makers” in the developed world.
In the rank of the factors that, somehow, stimulate resource depletion in DRAs,
Item 0 - price and technology are tied at the top;
Provas
Questão presente nas seguintes provas
Therefore, if one focuses on choices in resource management – for example between various levels of water use or between nutrient cycling and mining – it becomes impossible to miss the powerful resource-depleting incentive created by higher real interest rates. Costly credit undoubtedly shifts the composition – of inputs, outputs, techniques, investments, consumption, and savings, - sharply in a resource-depleting direction. It is only the effect of costly credit on degradation via investment levels that remains in doubt.
According to the text, higher real rates of interest have a powerful resource-depleting influence because they
Item 3 - shift the composition of output, input, techniques, consumption, and savings in a resource-depleting direction;
Provas
Questão presente nas seguintes provas
High (and Exogenously Set) Rates of Interest
It will now be shown that DRA resource depletion is in significant part caused by developed country policies that raise real long-term interest rates and that it could be moderated or reversed if these policies were. This interest rate argument asserts that rates of interest in the 1980s were excessive in the sense that they increased resource degradation by worsening the structures of investment, production, consumption, and resource management, and that these rates should therefore be reduced.
In May 1991 the World Bank summarized the position: “In the prosperous 1950s and 1960s, real long-term prime interest rates for prime borrowers stood at some 1 to 1.5 percent and short-term rates were even lower”. After an aberrant period of negative real rates during the rapid inflation of 1973-1977, “real long-term prime interest rates have hovered between 4 and 5 percent, and they appear set to remain at these levels or to climb even higher”; they have fully met that prediction in the 1990s. Such high rates appear to be historically without precedent.
In its discussion of the role of interest rates on resource depletion, the text asserts that
Item 3 - after 1977, long-term prime rates fluctuated between 4 and 5 percent and looked as if they could climb to higher levels.
Provas
Questão presente nas seguintes provas
Considere o seguinte modelo IS-LM para uma economia fechada:
| C = 200 + 0,8 Yd | ||
| I = 75 – 0,25 i + 0,11 Y | em que: | |
| T = 0,20 Y | C = consumo agregado | T = tributação |
| G = 200 | Yd = renda disponível | G = gasto do governo |
| Md = 0,6Y – 0,2 i | I = investimento | Md = demanda de moeda |
| Ms = 100 | i = taxa de juros | Ms = oferta real de moeda |
Com base neste modelo, avalie o item:
Item 4 - Numa economia aberta, com taxa de câmbio fixa, sem mobilidade de capitais e na qual as importações dependem da renda, os efeitos tanto da expansão fiscal quanto da expansão monetária sobre a renda são amplificados.
Provas
Questão presente nas seguintes provas
Considere o modelo de regressão linear
!$ C_t=\alpha_0+\alpha_1Y_t+u_t !$, !$ t=1, K, T !$,
em que: !$ C_t !$ é o consumo pessoal em !$ t !$, !$ Y_t !$ é a renda pessoal em !$ t !$ e !$ u_t !$ é o termo aleatório. É correto afirmar que:
Item 2 - se !$ C_t !$ e !$ Y_t !$ são I(1), então o teste ADF aplicado aos resíduos da regressão poderá identificar a presença de co-integração entre as variáveis;
Provas
Questão presente nas seguintes provas
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