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A particle is moving along the graph of y = sqrt(x). When x = 9 the...

A particle is moving along the graph of y = sqrt(x). When x = 9 the y-component of the
position of the particle is increasing at a rate of 1 centimeter per second.
How fast is the x-component changing at this moment?

How fast is the distance from the origin changing at this moment?

How fast is the angle of inclination q changing at this moment?

Math   Calculus   
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