help me

[ssaa391]

creat class which the object can hold any numbers.object created as one oe two dimension.
*if two columns ca be different sizes.
*the object can be resize.
*the object check if the user refers to an element that is out of range boundaries of the specified array.
*length of data of the object.
*provide different matrix-oriented operation like sum,different, product, inverse, transpose, determinant, check if matrix is positive-definite.