# functions and graph

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can anyone put some light on my concepts of even and odd function and how to identify its graph?? plz reply asap...
Page 1 of 1 Can anyone please provide me good material of functions(concepts n practice questions )

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Write a comment... if f(x + y/8 ,x-y/8) =xy, then f(m,n) + f(n,m)=0

(CAT 2009)
sol needed asap!!
only when m=n
only when m not equals to n
only when m=-n
for all m and n
NMIMS Mumbai
21 answers
You can view the comments after answering or skipping this question. say y = f(x) is a function of x

if y = f(-x) i.e. if v change -x instead of x and still the value of function remains unchanged, then the function is even function
for eg. cos(x) = cos(-x)
on the other hand, if y = -f(-x) then it is odd function i.e. value of function changes by sign alone when independent variable changes by sign
for eg. sin(-x) = -sin(x)
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