English: One thing, that should be noted is, that the even numbered polynomials 0, 2, 4, 6, 8 are all even function of x. H 0 of x is 1, H 2 of x is 4 x square minus 2, which does not change if x is negative or positive that is minus x or plus x. H 4 of x is again, is x raise to 4 x square.
Telugu: గమనించవలసిన విషయం ఏమిటంటే, సరి సంఖ్య గల బహుపదాలు 0, 2, 4, 6, 8 అన్నీ x యొక్క సరి ఫంక్షన్.