Why that cosx got disappeared ?!.. Kindly explain. Share with your friends Share 0 Lovina Kansal answered this Dear student We have,limx→0sin5x3x+cosx=f(0)⇒limx→0sin5x3x+limx→0cosx=f(0)⇒limx→0sin5x3x+1=f(0) ∵limx→0cosx=cos(0)=1⇒limx→05sin5x5×3x+1=f(0)⇒53limx→0sin5x5x+1=f(0)⇒53+1=f(0)⇒f(0)=83=k Regards 1 View Full Answer