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The figure shows an interactive graph of . (It may take
a minute to load -- be patient.) You can
change the value of in the graph by clicking and dragging
the red dot along the horizontal -axis. Assume that the
lines in each piece of continue beyond the graphing window.
Define a function that accumulates signed area between the
-axis and the graph of by

(a) For what values of does ?

(b) For what values of is ?
All in the interval

(c) For what values of does ?

(d) Why is positive when is negative?
A. Because accumulation functions like are always positive B. Because integrals are always positive C. Because integrating right-to-left is negative D. Because is negative and integrating right-to-left is negative E. None of the above

Graph of
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