# How to find the intervals of increase and decrease of a function

The y-value decreases as the x-value increases: For a function y=f (x): when x1 when x1 f (x2) Strictly Decreasing. Notice that f (x 1) is now

## Increasing/Decreasing Test and Critical Numbers

I am being told to find the intervals on which the function is increasing or decreasing. It is a normal positive parabola with the vertex at \$(3,0).\$ The equation could be \$y

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## Increasing and Decreasing Intervals

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## Increasing and Decreasing Intervals

Process for finding intervals of increase/decrease If possible, factor f ′ . If f ′ is a quotient, factor the numerator and denominator (separately). This will help you find the sign of f ′. Find all

## Increasing & decreasing intervals review

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## Process for finding intervals of increase/decrease

How to find intervals of increase and decrease on a function by finding the zeroes of the derivative and then testing the regions

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