the first variation












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Let $G(f)$ be a function defined by $G(f)=int_0^{infty} int_x^{infty} f(t) dt dx $. What is the first variation δG(f) and how it is calculated?










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Let $G(f)$ be a function defined by $G(f)=int_0^{infty} int_x^{infty} f(t) dt dx $. What is the first variation δG(f) and how it is calculated?










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  • Welcome to MSE. Your question is phrased as an isolated problem, without any further information or context. This does not match many users' quality standards, so it may attract downvotes, or be put on hold. To prevent that, please edit the question. This will help you recognise and resolve the issues. Concretely: please provide context, and include your work and thoughts on the problem. These changes can help in formulating more appropriate answers.
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Let $G(f)$ be a function defined by $G(f)=int_0^{infty} int_x^{infty} f(t) dt dx $. What is the first variation δG(f) and how it is calculated?










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Let $G(f)$ be a function defined by $G(f)=int_0^{infty} int_x^{infty} f(t) dt dx $. What is the first variation δG(f) and how it is calculated?







functional-analysis






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asked Jan 4 at 10:20









AbbasAbbas

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  • Welcome to MSE. Your question is phrased as an isolated problem, without any further information or context. This does not match many users' quality standards, so it may attract downvotes, or be put on hold. To prevent that, please edit the question. This will help you recognise and resolve the issues. Concretely: please provide context, and include your work and thoughts on the problem. These changes can help in formulating more appropriate answers.
    – José Carlos Santos
    Jan 4 at 10:25


















  • Welcome to MSE. Your question is phrased as an isolated problem, without any further information or context. This does not match many users' quality standards, so it may attract downvotes, or be put on hold. To prevent that, please edit the question. This will help you recognise and resolve the issues. Concretely: please provide context, and include your work and thoughts on the problem. These changes can help in formulating more appropriate answers.
    – José Carlos Santos
    Jan 4 at 10:25
















Welcome to MSE. Your question is phrased as an isolated problem, without any further information or context. This does not match many users' quality standards, so it may attract downvotes, or be put on hold. To prevent that, please edit the question. This will help you recognise and resolve the issues. Concretely: please provide context, and include your work and thoughts on the problem. These changes can help in formulating more appropriate answers.
– José Carlos Santos
Jan 4 at 10:25




Welcome to MSE. Your question is phrased as an isolated problem, without any further information or context. This does not match many users' quality standards, so it may attract downvotes, or be put on hold. To prevent that, please edit the question. This will help you recognise and resolve the issues. Concretely: please provide context, and include your work and thoughts on the problem. These changes can help in formulating more appropriate answers.
– José Carlos Santos
Jan 4 at 10:25










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