sat suite question viewer
Advanced Math
/ Nonlinear functions
Difficulty: Easy
The function is defined by . For which value of is ?
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Explanation
Choice A is correct. It's given that . Substituting for in this equation yields . Subtracting from both sides of this equation yields . Taking the square root of each side of this equation yields . It follows that when the value of is or . Only is listed among the choices.
Choice B is incorrect and may result from conceptual or calculation errors.
Choice C is incorrect and may result from conceptual or calculation errors.
Choice D is incorrect and may result from conceptual or calculation errors.