1. However, for negative values of x, roughly -4 and lower, the algorithm used to calculate Math.exp is relatively ill-behaved and subject to round-off error.
2. Then obtain base-case, best-case, and worst-case NPV and calculate mean NPV and standard deviation to (roughly) estimate the magnitude of the risk inherent to the project.
3. Astronomers calculate that the pulsar lies about 1, 600 light years from Earth and is about half a million years old, which makes it roughly middle-aged for this type of object.
4. Yeh and Lee knew that wind would change their contraption's course after launch, so they went on a free Web site to try to calculateroughly where the balloon would go.
叶和李知道风会改变他们的玩意儿在发射后的课程，所以他们一到免费网站尝试计算大致如气球会去。
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5. Among other pieces there is one on his teeth, which seemed to drop out at regular intervals, so that he could calculateroughly what span of life remained to him.
除其他作品有一个关于他的牙齿，这似乎辍学定期，以便他能计算出什么跨度大约生活仍然给他。
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6. Among other pieces there is one on his teeth, which seemed to drop out at regular intervals, so that he could calculateroughly what span of life remained to him.
