Signal to noise Enhancement Plot

Can someone please help me with signal-to-noise enhancement plot?

Here is my code:

TCanvas *c = new TCanvas();
	double_t x;
	double_t L = 50;
	TF1* f1 = new TF1("f1", "1-TMath::Exp((-4.49e-3)*50*(TMath::Sqrt(4*TMath::Sq(x)-TMath::Sq(0.14)))/(4*TMath::Sq(x)))", 0, 20); 
	f1->SetParameter(0, L);
	f1->SetTitle("Title; X-axis; Y-axis"); 

How can I change this plot into signal-to-noise enhancement plot?
Thank you.

@couet can you please take a look here? Thank you in advance!

@oshadura I saw this post but I must admit I do not really know the meaning of this question. The plot presented here is a simple function… fine. I do not see what kind of “changes” are required.

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I am sorry. I posted this topic before understanding the problem properly. This question does not make sense, lol.

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