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Let veca=2hati+hatj-3hatk and vecb=4hati...

Let `veca=2hati+hatj-3hatk` and `vecb=4hati+hatj+hatk` be two vectors. Find a vector `vecc` perpendicular to `veca` and `vecb`.

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MAXIMUM PUBLICATION-MODEL QUESTION-EXAMPLE
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  19. Let veca=2hati-4hatj+5hatk and vecb=hati-2hatj-8hatk be two vectors ...

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