How to add two defined function

[jiangjc-github]

Dear experts,

I want to add two defined function and follow the examples:
TF1 *fcos = new TF1 (“fcos”, “[0]*cos(x)”, 0., 10.);
fcos->SetParNames( “cos”);
fcos->SetParameter( 0, 1.1);

  TF1 *fsin = new TF1 ("fsin", "[0]*sin(x)", 0., 10.);
  fsin->SetParNames( "sin");
  fsin->SetParameter( 0, 2.1);

  TF1 *fsincos = new TF1 ("fsc", "fcos+fsin");

The attachment is my script, however, the error shows “unknown f3”.
Could you help me with my script？

Best regard,
Jiechen

posrebs2.C (933 Bytes)

[couet]

posrebs2.C (1.3 KB)

[jiangjc-github]

Dear experts,

Thanks very much for your help, it works smoothly after you revised.
Have a nice day.

Best regards,
Jiechen