$$\text { Find the value of } d ^ { 2 } y / d x ^ { 2 } \text { at the point defined by the given value of } t \text {. }$$

question 87

Multiple Choice

$$\text { Find the value of } d ^ { 2 } y / d x ^ { 2 } \text { at the point defined by the given value of } t \text {. }$$
- $$x = t + \cos t , y = 2 - \sin t , t = \frac { \pi } { 6 }$$

• A) \(- 2\)
• B) \(- 4\)
• C) \(- \sqrt { 3 }\)
• D) \(\frac { 1 } { 4 }\)

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Definitions:

Reinforcers

Stimuli that increase the likelihood of a behavior being repeated.

Tokens

Symbols or objects used to represent or signify something else, or in behavioral economics, a tangible reward used in token economy systems for reinforcing desired behaviors.

Crespi

Crespi is likely a reference to an individual or specific study within psychological or scientific research, but without additional context, it's unclear which Crespi or study is being referred to.

Reinforcement

A process in which a behavior is strengthened by the outcomes that follow, leading to an increase in the likelihood of that behavior occurring in the future.