NIMS Dubai

If . f:R→R , a,b,c,d ∈ R such that ( a,b ) * ( c,d ) = (ac, b+ad ). Find the identity element.Give an example for a relation which is neither reflexive nor symmetric. Consider . f,g :N →N and h : N →R defined as f x =2x , g y =3y+4 , and h z =sinz for all x,y,z ∈ N. Show that ho(gof) = (hog)of. ................
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