Discover the minimum value of the function x^2+x-2.

Expert Answers

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To find the minimum value of x^2+x-2 we find the derivative and equate it to 0 to solve for x. Using the value of x in the function we can find the lowest value.

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

f'(x) = 2x + 1

2x + 1 = 0

=> x = -1/2

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

=> (-1/2)^2 +(-1/2) - 2

=> 1/4 - 1/2 - 2

=> -9/4

=> -2.25

The minimum value of the function is -2.25

Approved by eNotes Editorial Team

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