Answer to Question #17682 in Calculus for hsd
For each of the following intervals, tell whether f(x) is increasing (enter INC ) or decreasing (enter DEC ).
Easy to see that there two zeros
x=0 and x=-2/5
so A=-2/5 and B=0.
to see inc and dec regions we have just to check value of derivative. If it is
positive at certain region then we have inc, if negative - dec. Hence
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