If f(x)={sinxx+cosx,x≠0k, x=0is continuos at x=0,then k=
1
2
3
0
Limx→0(sinxx+cosx)=1+1=2
If f(x)={sinxx,x≠01,x=0,then limx→0 f(x)=is
If f(x)={x, if whenx is rational0, if whenx is irrational;
g(x)={0, if whenx is rationalx, if whenx is irrational;
then(f−g) is