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Mathematics 16 Online
OpenStudy (ksaimouli):

is cosx/x odd or even function

OpenStudy (anonymous):

i think that (cos x)/x is the question................... so that is odd........ because when x is negative the function is negative........

OpenStudy (ksaimouli):

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OpenStudy (ksaimouli):

both the negaitives cancel right

OpenStudy (ksaimouli):

so it is even

OpenStudy (anonymous):

no they cannot be negative because cos(-x) is cos x

OpenStudy (anonymous):

convince yourself that an even function over an odd function is odd

OpenStudy (ksaimouli):

what about sin(-x)/x

OpenStudy (ksaimouli):

even

OpenStudy (anonymous):

draw a right triangle ........and find cos x as base/hypotenuse if you rotate x in the anti clockwise direction so base is still the same...........

OpenStudy (anonymous):

hence it is positive............

OpenStudy (ksaimouli):

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