Find (f×g)(x) when f(x)=x^2+8x+15 and g(x)=5 over x^2-9
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Note that the from 
to 0, that is the left part, the function is the line y=1.
Similarly, from 0 (not included) to
, the function is y=-1.
Thus the function is given by the rule:
y=1, for x≤0,
y=-1, for x>0.
Remark: a horizontal line at height c, from the x-axis, is the graph of the function y=c.
Similarly, from 0 (not included) to
Thus the function is given by the rule:
y=1, for x≤0,
y=-1, for x>0.
Remark: a horizontal line at height c, from the x-axis, is the graph of the function y=c.