EM-1996

Quadratic functions

E Math · Secondary 4 · Hard · Quadratic functions

The function

y = 2x + \dfrac{1}{x^2} - 3

is defined for

0.5 \le x \le 3

.

A horizontal line

y = k

cuts the graph of this function at exactly one point in this interval. Which of the following is a possible value of

k

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