A power series in x, or in x a, which is convergent in the interval 1 | 1 National Council of Examiners cm FOR Engineering and Surveying Fundamentals of Engineering Supplied-Reference Handbook Fourth Edition National Council of Examiners for Engineering and Surveying . Box 1686 Clemson sc 29633-1686 800-250-3196 Fundamentals of Engineering Supplied-Reference Handbook Fourth Edition Rev.