Determine the minimum and maximum value of the following trigonometric function.

f, of, x, equals, minus, 3, sine, 2, x, plus, 3
f(x)=−3sin2x+3

1 answer

To determine the minimum and maximum values of the function \( f(x) = -3 \sin(2x) + 3 \), we can analyze the range of the sine function and how it affects \( f(x) \).

  1. Understanding the sine function: The sine function, \( \sin(2x) \), oscillates between -1 and 1. Therefore, \[ -1 \leq \sin(2x) \leq 1. \]

  2. Calculating the values of \( f(x) \): Now we will substitute the extreme values of \( \sin(2x) \) into the function \( f(x) \):

    • When \( \sin(2x) = 1 \): \[ f(x) = -3(1) + 3 = -3 + 3 = 0. \]

    • When \( \sin(2x) = -1 \): \[ f(x) = -3(-1) + 3 = 3 + 3 = 6. \]

  3. Identifying the minimum and maximum values: From the calculations, we can summarize:

    • The minimum value occurs when \( \sin(2x) = 1 \), resulting in \( f(x) = 0 \).
    • The maximum value occurs when \( \sin(2x) = -1 \), resulting in \( f(x) = 6 \).

Thus, the minimum and maximum values of the function \( f(x) = -3 \sin(2x) + 3 \) are:

  • Minimum value: \( 0 \)
  • Maximum value: \( 6 \)