Numerical solutions of integrodifferential systems by hybrid of general   block-pulse functions and the second Chebyshev polynomials
  By applying hybrid functions of general block-pulse functions and the second Chebyshev polynomials,integrodifferential systems are converted into a system of algebraic equations. The approximate solutions of integrodifferential systems are derived. The numerical examples illustrate that the algorithms are valid. 
Xing Tao Wang