Definite Integral of p(x,y) with Bounds x>y>0 and dp(x,y)/dx = (e^-x^2)

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Homework Help Overview

The problem involves the function p(x,y) defined for the domain where x > y > 0. The derivative of p with respect to x is given as dp(x,y)/dx = e^(-x^2), and it is noted that p(y,y) = 0. The goal is to express p(x,y) as a definite integral with specific bounds.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the need to use the condition p(y,y) = 0 to determine the bounds for the integral. There is uncertainty about how to proceed with the integration and whether to treat the function as a single variable function of x. Questions arise regarding the clarity of the domain definition and potential typos in the problem statement.

Discussion Status

The discussion is ongoing, with participants seeking clarification on the problem's conditions and exploring different interpretations of the domain. Some guidance has been offered regarding the use of the boundary condition, but no consensus has been reached on the approach to take.

Contextual Notes

There is a noted ambiguity regarding the domain of p(x,y), specifically whether it should be interpreted as x ≥ y ≥ 0 or x > y > 0. This has led to questions about the properties of the function and its definition.

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Homework Statement



The function, p(x;y), of two variables is defined for x>y>0, and satisfies

We furthermore know that dp(x,y)/dx = (e^-x^2)

and that p(y; y) = 0

Homework Equations



I now need to write p(x,y) as a definite integral of the form int (f(t)dt, with lower bound t=H and upper bound x.

The Attempt at a Solution



I suppose I need the info p(y; y) = 0 to get the bounds, but not quite sure how. I sat earlier an evaluated the integral from 0 to inf and from -inf to inf, however I do not see how that could come in handy. I am thinking of treating the function as one of x alone as a start, but do not know how to proceed from there?
Anyone can give me a hint :-) Th
 
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IsomaDan said:

Homework Statement



The function, p(x;y), of two variables is defined for x>y>0, and satisfies   ?  

We furthermore know that dp(x,y)/dx = (e^-x^2)

and that p(y; y) = 0

Homework Equations



I now need to write p(x,y) as a definite integral of the form int (f(t)dt, with lower bound t=H and upper bound x.

The Attempt at a Solution



I suppose I need the info p(y; y) = 0 to get the bounds, but not quite sure how. I sat earlier an evaluated the integral from 0 to inf and from -inf to inf, however I do not see how that could come in handy. I am thinking of treating the function as one of x alone as a start, but do not know how to proceed from there?
Anyone can give me a hint :-) Th
Do you really mean x>y>0, or di you mean x>0 and y>0 ?

Does p(x,y) satisfy something in addition to what's stated ?

Check for any other typos you may have, so that your post is more readable.
 
I meant satisfies "x ≥ y ≥ 0". Don't know where that went.

Sorry for that. All the best

Jonas
 
IsomaDan said:
I meant satisfies "x ≥ y ≥ 0".
Still doesn't make sense. That's a change to the specified domain of p, not a property of p.
 

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