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Consider function [tex]\( f \)[/tex], where [tex]\( B \)[/tex] is a real number:

[tex]\[ f(x) = \tan(Bx) \][/tex]

Complete the statement describing the transformations to function [tex]\( f \)[/tex] as the value of [tex]\( B \)[/tex] is changed:

As the value of [tex]\( B \)[/tex] increases, the period of the function [tex]\( \square \)[/tex], and the frequency of the function [tex]\( \square \)[/tex]. When the value of [tex]\( B \)[/tex] is negative, the graph of the function [tex]\( \square \)[/tex].


Sagot :

Sure! Let's analyze the function [tex]\(f(x) = \tan(Bx)\)[/tex] step by step.

1. Effect of Increasing [tex]\(B\)[/tex]:
- The general period of the tangent function [tex]\(\tan(x)\)[/tex] is [tex]\(\pi\)[/tex].
- For the function [tex]\(f(x) = \tan(Bx)\)[/tex], the period changes to [tex]\(\frac{\pi}{|B|}\)[/tex].
- As [tex]\(B\)[/tex] increases, [tex]\(|B|\)[/tex] also increases.
- Consequently, the period [tex]\(\frac{\pi}{|B|}\)[/tex] decreases as [tex]\(|B|\)[/tex] gets larger.
- The frequency of the function is the reciprocal of the period. Thus, as the period decreases, the frequency increases.

2. Effect of Negative [tex]\(B\)[/tex]:
- If [tex]\(B\)[/tex] is negative, the argument [tex]\(Bx\)[/tex] inside the tangent function changes sign, which implies a horizontal reflection of the graph of the function.
- Specifically, the graph of [tex]\(\tan(Bx)\)[/tex] for negative [tex]\(B\)[/tex] is a reflection over the y-axis compared to the graph of [tex]\(\tan(Bx)\)[/tex] for positive [tex]\(B\)[/tex].

Therefore, the completed statement describing the transformations to function [tex]\(f\)[/tex] as the value of [tex]\(B\)[/tex] changes is:

As the value of [tex]\(B\)[/tex] increases, the period of the function decreases, and the frequency of the function increases. When the value of [tex]\(B\)[/tex] is negative, the graph of the function is a reflection over the y-axis.