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sorry, i hit enter too soon

Y=x(sqrt(4-x^2))

how do I find all pts on the graph where the tan line is vert and hori?

Y=x(sqrt(4-x^2))

y'=(x)(.5(4-x^2)^(-1/2)(-2x))+(sqrt(4-x^2))(1)

## Homework Statement

Y=x(sqrt(4-x^2))

how do I find all pts on the graph where the tan line is vert and hori?

## Homework Equations

Y=x(sqrt(4-x^2))

## The Attempt at a Solution

y'=(x)(.5(4-x^2)^(-1/2)(-2x))+(sqrt(4-x^2))(1)

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