public Vector mult(Vector v){
rowNum = getRowNum();
			colNum = getColNum();
			Vector mult = new Vector(rowNum);
			for(int i = 0; i < rowNum; i++){
				for(int j = 0; j < colNum; j++){
					mult.v[i]+=m[i][j]*v.get(j);
				}
			}
			return mult;
		}