Raw Transcript

Hey this is tom the calculus and physics guy who programs the TI89 calculators and other calculators for the TI system. uh… today or this video I’m going to be talking about or showing you how how fabulous my programs work on the vectors my site is EveryStepCalculus.com and enjoy my program this is two vectors in space uh… starting from the origin to x_y_z_ uh… points you notice we start again from the index 8 and in the home screen to get to my programs and up comes a menu with all these different types of things that you can compute and we want to do the vectors today so we’re gonna do a-b and vectors we add the first one is it asking for the x_y_z_ point of the first vector uh… vector a again and x_y_z_ and alpha 8 alpha minus seven alpha minus three vector b alpha sixalpha minus five alpha seven shows us what we have if that’s correct and you can go here and press oknow you notice they have the magnitude of vector a choose that one and you can see where the magnitude comes to eleven units uh… shows you how to do it eight squared you know square root of 8 squared minus seven squared minus three squared go back vector B same thing press the this shows you how to do that part uh… a minus b all these different vector calculations come up i wanted to do them when i was in college quickly and not waste time with it and get them exactly accurate vector a minus b is 2 minus b minus 10 if you want to find the magnitude of a minus b you can go a minus b and find that the shows you how to do exactly that putting in the variables dot product and then well move on here got all these different choices A cross product…length B times a cross product B times A there’s a difference uh… constants against a times b times a area of a parallelogram component of A in direction of B equation of a plane all these things cross product is pretty cool ’cause that’s a matrix system and shows you there and then does all the calculations for you and there’s the in the cartesian system i j k system or the vector system with the arrows on the ends of it uh… pretty neat huh enjoy my programs at EveryStepCalculus.com.

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