Adição de Matrizes 2×2
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
soma
About this calculator
The 2×2 matrix addition calculator performs element-wise addition of two square matrices of order 2. For each position (i,j), it adds the element from the first matrix to the corresponding element from the second. The result is a new 2×2 matrix. This operation is fundamental in linear algebra and is used in many practical applications.
To use, enter the values of both matrices in the indicated fields. The calculator checks if the data are valid numbers and displays the resulting matrix. The formula is simple: (A+B)[i][j] = A[i][j] + B[i][j]. For example, if A = [[1,2],[3,4]] and B = [[5,6],[7,8]], the sum is [[6,8],[10,12]].
When to use: in situations involving combination of linear transformations, addition of vectors or tabular data. Real examples: adding production cost matrices from two months, combining student grade matrices, or adding pixel matrices in image processing. It is useful whenever you need to combine information of the same structure.
Cautions: matrices must have the same dimension (2×2). Check that you have entered all values correctly. The calculator does not support matrices of other sizes. Remember that matrix addition is commutative: A+B = B+A. Avoid confusing with matrix multiplication, which follows different rules.
Frequently asked questions
Can I add matrices of different sizes?
No, matrix addition requires both matrices to have the same dimensions. This calculator only accepts 2×2 matrices.
What happens if I leave a field empty?
The calculator will display an error stating that all fields must be filled with valid numbers.
Does the order of matrices matter?
No, matrix addition is commutative: A+B = B+A. The result is the same regardless of order.
Can I use decimal numbers?
Yes, the calculator accepts decimal numbers (use dot as separator). For example, 1.5 is valid.
Does the calculator work offline?
No, it requires an internet connection to load scripts. Once loaded, calculations are performed in your browser.