若单项式2ax+2b2与-3aby的和仍是一个单项式.则xy等于______.
根据题意得:x+2=1y=2,
解得:x=-1y=2,
则xy=(-1)2=1.
Which of the following statements about how the features of a bond impact interest rate risk is FALSE ()
A. Bond price movements depend upon the direction and magnitude of changes in interest rates.
B. All else equal, a longer-term bond is more sensitive to interest rates than a shorter-term bond.
C. An inverse relationship between interest rates and bond prices means that the greater the change in interest rates, the less the change in fixed-coupon bond prices.
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