Show that (ai+bj)and (-bi+aj) are perpendicular...(adsbygoogle = window.adsbygoogle || []).push({});

im clueless on what to do ..any hints will be greatly apperciated

thanks

I know Im missing something really simple

Also the book has not yet introduced the scalar product so they want me to use some other way

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# Prove two vectors are perpendicular (2-D)

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