Which Transformation Was Not Performed on Y=cos X $y=-4 \cos \left(2 x+\frac{\pi}{3}\right) ?$

question 36

Multiple Choice

Which transformation was not performed on y=cos x to obtain $y=-4 \cos \left(2 x+\frac{\pi}{3}\right) ?$

• A) Vertical stretch by a factor of 4
• B) Reflection through the x -axis
• C) Horizontal stretch by a factor of 2
• D) Horizontal shrink by a factor of \(\frac{1}{2}\)
• E) Horizontal shift left \(\frac{\pi}{6}\) units

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Definitions:

Sampling Distribution

Distribution probabilities of a given statistic, ascertained through random sampling.

Standard Deviation

An indicator of the extent of variability or spread within a collection of numbers, illustrating the degree to which these numbers diverge from one another in a dataset.

Normal Curve

A bell-shaped curve that represents the distribution of a set of data that is symmetrically distributed around the mean.

Binomial Random Variable

A random variable that follows a binomial distribution, representing the number of successes in a fixed number of binary experiments.