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  2. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  3. HP-12C - Wikipedia

    en.wikipedia.org/wiki/HP-12C

    The HP-12C is a financial calculator made by Hewlett-Packard (HP) and its successor HP Inc. as part of the HP Voyager series, introduced in 1981.It is HP's longest and best-selling product and is considered the de facto standard among financial professionals.

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  5. Real and nominal value - Wikipedia

    en.wikipedia.org/wiki/Real_and_nominal_value

    A price index is the relative price of a commodity bundle. A price index can be measured over time, or at different locations or markets. If it is measured over time, it is a series of values over time . A time series price index is calculated relative to a base or reference date.

  6. Approximation error - Wikipedia

    en.wikipedia.org/wiki/Approximation_error

    Best rational approximants for π (green circle), e (blue diamond), ϕ (pink oblong), (√3)/2 (grey hexagon), 1/√2 (red octagon) and 1/√3 (orange triangle) calculated from their continued fraction expansions, plotted as slopes y/x with errors from their true values (black dashes)

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  8. Savings interest rates today: Beat the Fed's next move with ...

    www.aol.com/finance/savings-interest-rates-today...

    High-yield savings rates for December 16, 2024. Today’s highest savings rates are at FDIC-insured digital banks and online accounts paying out rates of up to 5.05% APY with no minimums at ...

  9. Absolute value - Wikipedia

    en.wikipedia.org/wiki/Absolute_value

    The real absolute value function is an example of a continuous function that achieves a global minimum where the derivative does not exist. The subdifferential of | x | at x = 0 is the interval [−1, 1]. [14] The complex absolute value function is continuous everywhere but complex differentiable nowhere because it violates the Cauchy–Riemann ...