f(x)=sin(3x+π/4)左移多少个单位变位偶函数?

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f(x)=sin(3x+π/4)左移多少个单位变位偶函数?

f(x)=sin(3x+π/4)左移多少个单位变位偶函数?
f(x)=sin(3x+π/4)左移多少个单位变位偶函数?

f(x)=sin(3x+π/4)左移多少个单位变位偶函数?
π/12.
π/4+π/4=π/2