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Powers, roots and logarithms

yˣ raises Y to the power X. Combine it with 1/x for any root.

Problem

What is 1.05 to the 10th power? What is the cube root of 27? And the square root of 2 to four decimal places?

Keystrokes

  1. 1.05ENTER10yˣ
    1.63

    Y to the power X.

  2. 27ENTER31/xyˣ
    3.00

    The cube root is the power 1/3.

  3. 2g√xyˣ
    1.41

    Square root.

  4. f4
    1.4142

    Shows four decimal places.

  5. f2
    1.41

    Back to two.

Answer

1.05¹⁰ is 1.63 (to two decimals), ∛27 is 3.00, and √2 is 1.4142.

Why it works

The calculator always keeps 10 significant digits, whatever the display shows. f followed by a digit only changes how many decimals you see, and f. switches to scientific notation.

gLN%T is the natural log and geˣ1/x its inverse. For a base-10 logarithm, divide by ln 10: gLN%T10gLN%T÷.

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