E7½ could refer to a couple of different concepts depending on the context. In mathematical terms, "E" is often used to denote the base of the natural logarithm (approximately equal to 2.71828), and "7½" (or 7.5) could suggest a power or exponent. If you're referring to \( e^{7.5} \), it means Euler's number raised to the power of 7.5.
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