求两道数学解答

wakesleep2011 · 发表于 2011-5-19 16:34:45

the rate of a certain chemical resction is directly propotional to the spuare of the concentration of chemical A present and inversely propotional to the concentration of chemical B present. If the concentration of chemical B is increased by 100%,which of the folloeing is closet to the percent change in the concentration of chemical A reqiured to keep the reaction rate unchanged.
a 100%decrease b 50%deacrease c40% decrease d 40%increase e 50& incrase

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If n and m are positive intengers ,what is the remainder 3^(4n+2)+m is diuvided by 10
(1) n=2 (2)m=1

求两道数学解答

所属分类: GMAT考试

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