Hold for aritrary nxn matrices
Discuss why the identity (3A-B)(A+2B)=3A^2+5AB-2B^2 doesn't hold for aritrary nxn matrices A,B, and give the correct version of the identity.
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An aircraft is flying straight and level at the altimeter reading of 10,500 ft (with altimeter set to a reference of 29.92"Hg) and outside air temperature of 32F. If the pitot-static system on the aircraft measures a dynamic pressure of 12.6 lb/ft
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