Given two vectors, A and B:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]A = (x\widehat{x} + 2y\widehat{y} + 3z\widehat{z})[/tex]

[tex]B = (3y\widehat{x} - 2x\widehat{y})[/tex]

I need to calculate [tex](B [dot] \nabla)A[/tex], as part of a problem. The answer should be:

[tex]\widehat{x}(3y) + \widehat{y}( -4x)[/tex]

I get:

[tex](B [dot] \nabla)A = ((3y) \delta / \delta x - (2x)\delta / \delta y) (x\widehat{x} + 2y\widehat{y} + 3z\widehat{z})[/tex]

[tex]=(0+0)(x\widehat{x} + 2y\widehat{y} + 3z\widehat{z})[/tex]

[tex]=0[/tex]

I don't understand what I'm doing wrong. Can someone help me out please? Thanks in advance!

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# Homework Help: Divergence Question

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