//plotting two functions on the same graph


#include<iostream>

using namespace std;

void ylim() {
		
	TCanvas *c = new TCanvas("c","c");
	
	
	
	TF1*f1= new TF1("f1","exp([0]+[1]*x)",0.,20.);
	f1->SetParameters(1,-1);
	TF1 *f2 = new TF1("f2","sin(x)/x",0.,20.);
	f1->GetYaxis()->SetRange(-5,5);
	f2->GetYaxis()->SetRange(-5,5);
	
	f1->Draw();
	f2-> Draw("SAME");
	
	}