TO SOLVE PROBLEM INVOLVING FUNCTION
Given f : x → x 2 – 4x -1, find a) the image of 2 f : x → x 2 – 4x -1 f(x) = x 2 – 4x -1 when x = 2 f(2) = 2 2 – 4(2) -1 = 4 – 8 – 1 = -5 Hence, the image of 2 is -5 // note persoalan sekarang is dia nak image of 2, maksudnya object dia adalah 2. object tu yang mana? ok now function ni dia ada object and image. Image is like hasil dia tau.. F(X) = IMAGE where the x is the OBJECT. skang nie dia dah bagi korang OBJECT, tinggal nak carik IMAGE je. as easy as substitution. Masukkanje dalam tu.. masuk masuk masuk, pastu kire kire kire, dapat la jawapan dia. OBJECT can be any symbol ye.. jgn ingat x je boleh jadi OBJECT. klu aku letak F(s) ; hence the OBJECT will be 's'. we try other 'twist' okay? end note // b)the object that have the image of 4 // ok, skang klu soalan d...