However, Cauchy observed that the stress vector T {\displaystyle T} across a surface will always be a linear function of the surface's normal vector n {\displaystyle n} , the unit-length vector that is perpendicular to it.
Some do and some don't. A Nintendo Wii costs approximately $250 (the price range is $160-$380). <br /><br /> Don't forget that, in addition to the Wii itself, you have to buy games and controls; that'll cost an extra $50-$100.
Xbox One vs PS4 price difference. It's expensive to be an early adopter, and the initial PS4 and Xbox One prices prove just that in each of the countries the systems have launched. One year ago, the PS4 price was the more tempting deal: $399 for the console and DualShock 4 controller. Xbox One was expensive at $499 for the system, Xbox One controller and Kinect. After two official Xbox One price drops, the cost comparison is actually in Microsoft's favor in the US. The new list price is $349 with a game, but without Kinect included. It's rumored to go even lower soon, maybe at E3 2015.