CAL2_007 נגזרות מכוונות וגרדיאנט 2023-05-23 21.59.17.excalidraw

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a9c2057bfef457570e51ec74b6f39ccedd6a93cd: $$
\vec{v}

3810e456f195e5d9bb947172f5b7a52625616b0c: $$
\vec{N}