(a) Comparison of absolute errors of 3rd order OHAM solution and 3rd order VIM solution for Example 1 at and various values of t. (b) Comparison of absolute errors of 3rd order OHAM solution and 3rd order VIM solution for Example 1 at and various values of t. (c) Comparison of absolute errors of 3rd order OHAM solution and 3rd order VIM solution for Example 1 at and various values of t.