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Mathematics, 29.06.2019 14:00 zoeyandblaze

Which of the following options is an even function. a. f(x)=sin(x+π)b. f(x)=2sin(2x)c. f(x)=cos(x+π)d. f(x)=2sin(π+2π)

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Which of the following options is an even function. a. f(x)=sin(x+π)b. f(x)=2sin(2x)c. f(x)=cos(x+π)...
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