Warawoot Benjjaputtarog, the deputy managing director at GT Wealth Management, an investment firm that runs such seminars, says education is important for those who are shifting from gold bullion or jewelry to sophisticated futures contracts.

VOA: standard.2010.07.21

In that case, y will be -gt^/2+c+bt.

在这个情况下y=-gt^/2+c+bt

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