When two vectors are dotted, the result is a scalar. But why here http://www.cobalt.chem.ucalgary.ca/ziegler/educmat/chm386/rudiment/mathbas/vectors.htm , the del-squared still maintains its unit vectors i, j, k? Isn't it this way ∇(adsbygoogle = window.adsbygoogle || []).push({}); ^{2}= (∂^{2}/∂x^{2}+ ∂^{2}/∂y^{2}+ ∂^{2}/∂z^{2}) and not (i∂^{2}/∂x^{2}+j∂^{2}/∂y^{2}+k∂^{2}/∂z^{2})? Thank you! :)

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# Laplacian operator question

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