Find the Zeros of the Function $$f ( x ) = x ^ { 2 } - 5 x + 1$$

question 204

Multiple Choice

Find the zeros of the function. Give exact answers.
- $$f ( x ) = x ^ { 2 } - 5 x + 1$$

• A) \(\frac { 5 \pm \sqrt { 21 } } { 2 }\)
• B) \(\frac { 5 \pm \sqrt { 29 } } { 2 }\)
• C) \(\frac { - 5 \pm \sqrt { 21 } \mathrm { i } } { 2 }\)
• D) \(\frac { 5 \pm \sqrt { 29 } \mathrm { i } } { 2 }\)

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Definitions:

Perspective

A monocular cue for depth based on the convergence (coming together) of parallel lines as they recede into the distance.

Weber's Constant

A principle in psychophysics that quantifies the smallest change in a stimulus that can be detected, stating that this change is a constant proportion of the original stimulus intensity.

Threshold

The point at which a stimulus is strong enough to be detected or to cause a response.

Difference Threshold

The smallest detectable difference between two stimuli or the minimum change in a stimulus that can be correctly perceived as differing from a reference stimulus.