Calculating Rate of Change of Distance to Origin

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SUMMARY

The discussion focuses on calculating the rate of change of the distance from a particle moving along the curve defined by the equation y = 3√(4x + 4) to the origin (0,0) as it passes through the point (3, 12). The x-coordinate of the particle increases at a rate of 2 units per second. To find the rate of change of distance (dD/dt), participants suggest starting with the distance formula D = √(x² + y²), substituting y with the given curve equation, and then differentiating implicitly with respect to time.

PREREQUISITES
  • Understanding of implicit differentiation
  • Familiarity with the distance formula in a Cartesian coordinate system
  • Knowledge of derivatives and rates of change
  • Basic algebraic manipulation skills
NEXT STEPS
  • Review implicit differentiation techniques in calculus
  • Study the application of the distance formula in physics
  • Learn about related rates problems in calculus
  • Explore the concept of parametric equations and their derivatives
USEFUL FOR

This discussion is beneficial for students studying calculus, particularly those focusing on related rates and distance calculations in physics and mathematics.

Weave
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Homework Statement


A particle is moving along the curve y= 3 \sqrt(4 x + 4). As the particle passes through the point (3, 12), its x-coordinate increases at a rate of 2 units per second. Find the rate of change of the distance from the particle to the origin at this instant.

Homework Equations


1.y= 3* \sqrt(4 x + 4)


The Attempt at a Solution


Not too sure how to start.
 
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Begin with a formula for the distance(D) from (x,y) to the origin. Then you can plug in what you know about y. Finally differentiate (implicitly) the formula with respect to time. You should get an equation involving dD/dt, x, and dx/dt. You know x, and dx/dt. Find dD/dt.
 
What formula for distance are you talking about?
 
Weave said:
What formula for distance are you talking about?

No wonder you are having a problem! When dealing with "distance to the origin", you really need to know that the distance from a point (x,y) to the origin, (0,0), is \sqrt{x^2+ y^2}!:approve:
 

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