Page 51 - Math SL HB Sem 1
P. 51
FUN(]'tIONS , EQUATI ONS, INT]QUALITTES
llx:rr n p le 2
,,
Frrrri g.y'its ril+,(. r\rn tlr:rl xrr, ,€ f\ and
f
(;l)(.) 'r'l I ) ./(;r) = 2',x € R (use
2. IDENTITY FUNCTION
We clefined rhe idenrity, 1 , as
If an identity fluncrion, 1 exists rlren l, ,rrr., hl? ,frJproperty thar for any given firncrion
0r (.f,,t)(x) = (t,f)(x) - f{x)
l-5
