Which of These Functions Is One-To-One?
A) $f(x)=2 x^{3}-3 x$ B) F(x)=6x +14
C)

question 49

Multiple Choice

Which of these functions is one-to-one?

• A) \(f(x)=2 x^{3}-3 x\)
• B) f(x)=6x +14
• C) \(f(x)=\sqrt{x^{2}-3 x-2}\)
• D) \(f(x)=5 x^{2}-x+3\)
• E) \(f(x)=\frac{x^{2}+7}{x-1}\)

Recognize commonly used abbreviations and symbols in mechanical engineering drawings.

Understand the specifications and designations for threads, including UNC and metric systems.

Understand the basic requirements and designations for bearings and their applications in machinery.

Understand the effects of adding different elements to steel on its properties.

---

Definitions:

Psychiatric Disorders

Mental health conditions characterized by changes in emotion, thinking or behavior (or a combination of these) associated with distress and/or impaired functioning.

ADHD

Attention Deficit Hyperactivity Disorder, a neurodevelopmental disorder characterized by inattention, hyperactivity, and impulsivity.

Anxiety

A mental health disorder characterized by feelings of worry, anxiety, or fear that are strong enough to interfere with one's daily activities.

ODD

Oppositional Defiant Disorder, a behavioral disorder in children characterized by a consistent pattern of angry, defiant, and vindictive behavior towards authority figures.