A method of fast matrix multiplication and a method and apparatus for fast solving of a matrix equation are disclosed. The object is represented by a boundary representation object, wherein the BP object includes a boundary representation of a surface of the object, wherein the motion is represented by a set of swept volumes, wherein the set of swept volumes includes a first set of implicit functions defining a surface of the set of swept volumes. The key holder includes first and second ends positioned opposite to each other. An optimal fire pulse for the print head heater is selected based at least in part on the results of the velocity optimization procedure. The Wi-Fi engine supports circuit switched and packet switched services over a Wi-Fi connection, thus allowing commands received from native applications on a UE to connect the user to either a wireless unlicensed communication system or a wireless licensed communication system. A control section determines the contents of image processing based on print setting specified from an instruction section and controls the compression and decompression timings of the image data in response to the image processing contents.