What is the range of the following function: f (x) = - x^2+x^-1 if the domain is {-2, - 1, 1}

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Mathematics

Kendall Howell

17 February, 21:25

What is the range of the following function: f (x) = - x^2+x^-1 if the domain is {-2, - 1, 1}

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Skylar Page · Answer 1

f (x) = - x^2 + x^-1

f (-2) = - (-2) ^2 + (-2) ^-1 = - 4 - 1/2 = - 9/2

f (-1) = - (-1) ^2 + (-1) ^-1 = - 1 - 1 = - 2

f (1) = - (1) ^2 + (1) ^-1 = - 1 + 1 = 0

The range is { - 9/2, - 2, 0}