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McLaughlin is not a well-known figure in the context of introducing Newton or the series development of the general function. It’s possible that you may be referring to a lesser-known individual or a specific reference that I’m not familiar with, as my training data only goes up until September 2021.

However, I can provide you with information about the notable achievements of Sir Isaac Newton and the development of series expansions in mathematics, which are relevant topics in this context.

Sir Isaac Newton (1643-1727) was an English physicist, mathematician, and astronomer who made significant contributions to the fields of physics, mathematics, and astronomy. Some of his notable achievements include:

  1. Laws of Motion: Newton formulated the three laws of motion, which are foundational principles in classical physics. These laws describe the relationship between the motion of an object and the forces acting upon it.
  2. Law of Universal Gravitation: Newton proposed the law of universal gravitation, which states that every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
  3. Principia Mathematica: Newton’s most famous work, “Philosophiæ Naturalis Principia Mathematica” (Mathematical Principles of Natural Philosophy), published in 1687, presented his laws of motion and the law of universal gravitation. This work laid the foundation for classical mechanics and had a profound impact on the development of modern physics.

As for the development of series expansions in mathematics, it is a broader concept that encompasses contributions from various mathematicians throughout history. Series expansions involve expressing a function as an infinite sum of terms, often in the form of a power series. This technique allows for the approximation and manipulation of functions.

Some notable mathematicians who made significant contributions to the development of series expansions include:

  1. Isaac Newton: While not specifically known for introducing the series development of the general function, Newton did contribute to the development of power series expansions. He used power series to expand functions and solve differential equations, and his work on calculus was instrumental in this regard.
  2. Leonhard Euler: Euler, an 18th-century Swiss mathematician, made significant contributions to the theory of power series. He worked extensively on the exponential, logarithmic, and trigonometric functions, and his work led to the development of Euler’s formula, which relates exponential functions, trigonometric functions, and complex numbers.
  3. Augustin-Louis Cauchy: Cauchy, a 19th-century French mathematician, made important contributions to the theory of functions and the development of complex analysis. He introduced the concept of a Laurent series, which generalizes power series expansions to include negative powers of the variable.

These are just a few examples of mathematicians who have made contributions to the development of series expansions. Mathematics is a vast field with numerous contributors, and the development of series expansions is an ongoing area of research.」