Math Problem Statement
Which represents an even function?
y = cos(x)
y = sin(x)
y = tan(x)
y = cot(x)
Solution
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Math Problem Analysis
Mathematical Concepts
Even and Odd Functions
Trigonometric Functions
Formulas
f(x) = f(-x) for even functions
cos(-x) = cos(x)
sin(-x) = -sin(x)
tan(-x) = -tan(x)
cot(-x) = -cot(x)
Theorems
Even and Odd Function Theorem
Suitable Grade Level
Grades 9-11
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