\
(a)
\The unemployed rate is varies with time.
is rate of change of percentage of unemployed force with respect to time
and the units are unemployed percent per year.
\Rate of change of unemployment .
(b)
\Consider a table of values for time and .
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1999 | \ \
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2000 | \ \
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2001 | \ \
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2002 | \ \
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2003 | \ \
| \
2004 | \ \
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2005 | \ \
| \
2006 | \ \
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2007 | \ \
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2008 | \ \
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(a) is rate of change of percentage of unemployed force with respect to time and the units are unemployed percent per year.
(b)
\ \
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\
| \
1999 | \ \
| \
2000 | \ \
| \
2001 | \ \
| \
2002 | \ \
| \
2003 | \ \
| \
2004 | \ \
| \
2005 | \ \
| \
2006 | \ \
| \
2007 | \ \
| \
2008 | \ \
| \