@amrramadaneg Ok, I really do not see the joke part in my reply to your question. Please do not take it personal, but a post with misspellings, asking a question with no details given and therefore basically unanswerable => I do not expect a mature being behind this.
Seriously though, if you wrote the trapezoid routine yourself, then you'll have to either debug it yourself or post it here together with a test case exhibiting the problem.
If you used Student[Calculus1][ApproximateInt] (which per the docs is a trapezoidal-rule integrator), then be aware that Maple has a number of industrial-strength numeric integrators that you ought to be at least aware of and see whether they give you a better result. Look for int/numeric in the help facility. There are a number of integrators with different strengths and weaknesses, and for stiff or non-stiff problems. For each, there are a number of parameters that affect the outcome (like stepsize, convergence criterion etc.), and you probably have to explore different settings for these if your problem is ill-conditioned.
If you want help here I suggest strongly you create a test case displaying the problem and upload it. Yes, it may be a pain, but how do you expect people to help you otherwise? And, btw, you may want to do this for yourself to understand what is going on and how to fix it.
... this coming from someone who actually has used Maple's numeric integrators repeatedly for real-world problems, and at times struggled with them. While there are problems just too ill-conditioned to be solved in this way without being reformulated; I have found Maple's integrators on the whole to be quite powerful.