Graph three first-dervative finite difference approximations
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Graph all three first-dervative finite difference approximations along with the theoretical, and do the same for the second derivative as well.
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A bank manager wanted to double-check her claim that recent process improvements have reduced customer wait times to an average of 3.3 minutes, with a standard deviation fo 1.0 minutes. To test this, she randomly sampled 25 customers and recorded
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