Free Printable AMA1D05 Modeling with Functions

Worksheets

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If you have only HKEAA approved calculator,

can you solve (find) all possible real root of x³ + 3x - 1 = 0?

YES, of course

WoW, how?!

Um...

No, impossible.

The real root of x³ + 3x - 1 = 0

can be numerically solved by Calculator.

Which formula can help you to solve?

None of them can find the real root!!

The real root of x³ + 3x - 1 = 0

can be numerically solved by Calculator.

Which one can be the most efficient formula

to give you a ``correct" numerical solution?

oh, no~

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