Linear Algebra Linear Algebra Math Forum

 September 25th, 2012, 05:18 PM #1 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Gradient I know this question is in Vector Calculus but there doesn't seem to be place where I can ask this question here. I would love it if someone could help me out. What is the square of a gradient of a function?
 September 25th, 2012, 05:24 PM #2 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Re: Gradient The gradient of a scalar function, to be more specific.
 September 26th, 2012, 12:55 AM #3 Math Team     Joined: Mar 2012 From: India, West Bengal Posts: 3,871 Thanks: 86 Math Focus: Number Theory Re: Gradient I never heard of the square of a gradient of a function. Are you asking about the Laplace operator $\nabla^2 f$ ?
 September 26th, 2012, 06:04 AM #4 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Re: Gradient How do you solve ((grad(f(x)))^2? Im sorry. I should have written the problem.
 September 26th, 2012, 06:06 AM #5 Math Team     Joined: Mar 2012 From: India, West Bengal Posts: 3,871 Thanks: 86 Math Focus: Number Theory Re: Gradient Oh, so you mean $$$\Delta f$$^2$ ?
 September 26th, 2012, 06:49 AM #6 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Re: Gradient That is exactly what I meant.
 September 26th, 2012, 06:51 AM #7 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Re: Gradient The delta symbol you made is the gradient, right? I know there is different notations but I just want to be sure.
 September 26th, 2012, 07:42 AM #8 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Re: Gradient Do you think you can help me?
September 27th, 2012, 04:41 AM   #9
Math Team

Joined: Mar 2012
From: India, West Bengal

Posts: 3,871
Thanks: 86

Math Focus: Number Theory

Quote:
 Originally Posted by truthseeker The delta symbol you made is the gradient, right? I know there is different notations but I just want to be sure.

Quote:
 Originally Posted by truthseeker Do you think you can help me?
Nope. I was never too good at vector algebra. Perhaps someone who has an expertise in VA would probably jump in . . .

 September 30th, 2012, 07:41 AM #10 Newbie   Joined: Sep 2012 Posts: 9 Thanks: 0 Re: Gradient In VA?

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