Q1.Let f:R to R and f(x)=10x+7. find the function g:R to R such that gof=fog=I. Q2.let f:X toY be a function. define a relation R on X given by R=((a,b):f(a)=f(b)). show that R is an equivalence relation on X. Q3.Show that the function f: R to R defined by f(x)=sin(2x+5) is neither one one nor onto.