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【简答题】
（本小题满分16分） 已知 f ( x )、 g ( x )都是定义在R上的函数，如果存在实数 m 、 n 使得 h ( x ) = m f ( x )+ ng ( x )，那么称 h ( x )为 f ( x )、 g ( x )在R上生成的一个函数. 设 f ( x )= x 2 + ax ， g ( x )= x + b ( R)， = 2 x 2 +3 x -1， h ( x )为 f ( x )、 g ( x )在R上生成的一个二次函数. （1）设 ，若 h ( x )为偶函数，求 ； （2）设 ，若 h ( x )同时也是 g ( x )、 l ( x ) 在R上生成的一个函数，求 a+b 的最小值；
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皮皮学刷刷变学霸
举一反三
【单选题】The forward exchange rate is
A.
the exchange rate at which economic agents agree yesterday to exchange currencies at some specified time in the future.
B.
the exchange rate at which economic agents agree today to exchange currencies at some specified time in the future.
C.
the exchange rate at which economic agents agree today to exchange currencies at some specified time in the past.
D.
the quotation between two currencies for immediate delivery
【简答题】小明将某点关于x轴的对称点误认为是关于y轴的对称点，得到点（-3，-2），则该点关于x轴对称的点的坐标是______．
【简答题】汇率(exchange rate)
【简答题】汇率(exchange rate)
【简答题】单一汇率(Single Exchange Rate)与复汇率(Multiple Exchange Rate)
【单选题】The percentage change in the nominal exchange rate equals the percentage change in the real exchange rate plus the:
A.
foreign inflation rate minus the domestic inflation rate.
B.
domestic inflation rate minus the foreign inflation rate.
C.
foreign exchange rate minus the domestic exchange rate.
D.
domestic interest rate minus the foreign interest rate.
【简答题】小华看到了坐标系中点A关于y轴的对称点为B（a，b），而点B关于x轴的对称点为C（-3，-2），点A关于x轴对称点为D，若将A、B、C、D各点的纵坐标加3后描出变化后的A、B、C、D各点，并顺次连接，求出此四边形面积．
【单选题】According to the interest rate parity theory of the exchange rate ( )
A.
low interest rate in A country will increase the spot exchange rate of the current
B.
low interest rate in A country will increase the forward exchange rate of the currency
C.
low interest rate in a country will lead to a decline in the spot foreign exchange rate.
D.
low interest rate in a country will lead to a rise in the forward foreign exchange rate
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