Find the largest integer value of the function: y = 9.4 * cos3x.
| July 7, 2021 | education
1) Since | cos (3x) | ≤ 1, then | y | = | 9.4 * cos (3x) | = 9.4 * | cos (3x) | ≤ 9.4 * 1 ≤ 9.4, whence -9.4 ≤ y ≤ 9.4.
2) Since the function y takes all values in the range from -9.4 to 9.4, then to solve the problem you need to find the smallest integer from this range. It will be -9.
ANSWER: -9.
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