They got called 'odd' because the functions x, x 3, x 5, x 7, etc behave like that, but there are other functions that behave like that, too, such as sin(x):īut an odd exponent does not always make an odd function, for example x 3+1 is not an odd function. They got called 'even' functions because the functions x 2, x 4, x 6, x 8, etc behave like that, but there are other functions that behave like that too, such as cos(x):īut an even exponent does not always make an even function, for example (x+1) 2 is not an even function. In other words there is symmetry about the y-axis (like a reflection):
They are special types of functions Even Functions
