Find the Domain y=2cos(x)

Problem

y=2*cos(x)

Solution

1. Identify the type of function. The given equation y=2*cos(x) is a trigonometric function, specifically a transformation of the parent cosine function.

2. Determine the constraints on the input variable x The cosine function cos(x) is defined for all real numbers, as there are no values of x that result in division by zero or the square root of a negative number.

3. Conclude the domain. Since there are no restrictions on the input, the domain consists of all real numbers.

Final Answer

Domain: *(−∞,∞)

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