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MATHEMATICS 1 EXCEL EXERCISE

Choose 8 equally spaced points in the interval [0, 1.3] to calculate the following:

• tan(x)

• x + x3

• The difference x + x3 − tan(x).

• The absolute value of the difference. (This is also known as the error, when we think of x + x3 as an approximation to tan(x).)

    Use Excel on your iPad to perform the calculations. See the videos “Introduction to Excel on the iPad” and “Maths 1 Excel Exercise”, for help with using Excel on your iPad.

    Now modify your Excel file to estimate the maximum error when x + x3 is used to approximate tan(x) for x ∈ [0, 1.3].