Einstein introduces A and B coefficients to describe spontaneous emission and induced absorption and emission.
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It generates binomial coefficients.
Scientists used it to develop Nuclear Power
Expansion of the Binomial a+b
In an equation, A will be on one side (generally the left side) all alone, and B will have the coefficients and operands. For example: A = 3B + 7
A quadratic equation in standard form is based on the model: ax2 + bx + c = 0 a, b, and c are called the coefficients. "Real coefficients" simply means that a, b, and c are real numbers (as opposed to complex numbers). For example: 5x2 - 3x +2 = 0 ... has real coefficients, while (3-2i)x2 + (-2 + 4i)x + (4 + 3i) = 0 does not.