Why it is to say that sin x is an odd function while cos x is an even function ? Where does the odd and even came about ? @@

Question

skullpatrol · Answer

$$\Huge x^3, x^5,...$$ $$\Huge x^2, x^4,...$$

anonymous · Answer

what do you mean ?

skullpatrol · Answer

what is the definition of an even number?

mayankdevnani · Answer

@HatcrewS  always remember:-
$$\large \bf EVEN ~FUNCTION=Symmetric~about~its~axis$$
or we can say that all values of f(x) is satisfied for all values of f(ix) So we called them as SYMMETRIC ABOUT ITS AXIS.
example :- Cos (x)

Graph of cosx:-

mayankdevnani · Answer

understood ? @HatcrewS

mayankdevnani · Answer

EVEN FUNCTION :-same value of +ve x for a function is satisfied for same -ve value of x for that function.

mayankdevnani · Answer

or to get more information about these function,please refer to links below :- http://www.mathsisfun.com/algebra/functions-odd-even.html

mayankdevnani · Answer

hope you understand.

anonymous · Answer

what do u mean by symmetric ? isnt symmetric means the same when cut by half ?

mayankdevnani · Answer

http://www.mathsisfun.com/algebra/functions-odd-even.html

mayankdevnani · Answer

+ve image axis is same as -ve axis image

anonymous · Answer

sin x also...

mayankdevnani · Answer

no....its odd function..its opposite

anonymous · Answer

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