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-Solve both for x.
-Can you solve both of these for x without a Ti-89 calculator? If so how?
-The reason I want to calculate this is to find upper and lower quartiles of a deformity angle which is defined by the function on the left hand side of the equals sign.

  • statistics/calculus -

    You can certainly solve for x without a TI-89, but you will need to use some kind of iterative method.

    Judging by the shape of the curve, Newton's method should converge quite rapidly.

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