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13 REPRESENT By graphic reading
In each case, the line d represents a function f.
1. Give the sign of f(-3) and the sign of f(4).
2. Give the sign of f(x) according to the values of x.
3. Draw up the table of signs of f.
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13 REPRESENT By graphic reading In each case the line d represents a function f 1 Give the sign of f3 and the sign of f4 2 Give the sign of fx according to the class=

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