Solving the definite integration with Haar wavelet

摘要

This paper combines Haar wavelet with operator matrix effectively, discreting the integrand properly, So to those integrations which are not easily obtained the antiderivatives are transformed into the product of constant matrices, while the product of matrices can be achieved directly by MATLAB. Therefore we can obtain the result easily; Four examples are given to demonstrate the simplicity, clarity and powerfulness of the new method.