Question
Determine the x-intercepts of the function \( g(x) = \cos(x) - 1 \).
Ask by Bush Wood. in South Africa
Feb 03,2025
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Answer
The x-intercepts of the function \( g(x) = \cos(x) - 1 \) are all integer multiples of \( 2\pi \).
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Bonus Knowledge
The function \( g(x) = \cos(x) - 1 \) has x-intercepts where \( g(x) = 0 \). So, we set the equation to zero: \[ \cos(x) - 1 = 0 \] This simplifies to: \[ \cos(x) = 1 \] The cosine function equals 1 at integer multiples of \( 2\pi \). Therefore, the x-intercepts of the function are given by: \[ x = 2n\pi \quad \text{for } n \in \mathbb{Z} \] This means the x-intercepts occur at points like \( 0, 2\pi, -2\pi, 4\pi, -4\pi, \) and so on.