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Who can help me do a math problem in grade one of senior high school? Find the set of maximum and minimum values of the following functions, and write the maximum and minimum values y = 2-cosx / 3, X belongs to R
If the minimum satisfies cos X / 3 = 1, we can know from the cosine function image that it must satisfy X / 3 = 2K π, so x = 6K π (K ∈ z), {x | x = 6K π, K ∈ Z}, then we can get the minimum value = 1, and the maximum value is {x | x = (6k-3) π, K ∈ Z}, the maximum value = 3
Function f (x) = | SiNx | 2sinx + 2cosx \ | cosx|
|| denotes absolute value, | denotes division
f(x)=|sinx|\2sinx+2cosx\|cosx|
f(x=5/2 (2kπ
Find the set of the maximum and minimum values of the function y = 3sin (3 / 4x - Π / 4) and the corresponding x values,
The maximum value is 3, the minimum value is - 3, when the maximum value is 3 / 4x - Π / 4 = Π / 2 + 2K Π, you can solve the set of X, similarly, when the minimum value is 3 / 4x - Π / 4 = Π + 2K Π, you can solve the range of X, I hope it can help you~
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