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  1. var
  2. x, y:real;
  3. begin
  4. writeln('Vvedit x');
  5. read(x);
  6. y:= (sin(sqr(x)-4) + 2) / cos(3*x);
  7. writeln('y=', y:8:4);
  8. readln
  9. end.
Success #stdin #stdout 0s 4532KB
stdin
1
stdout
Vvedit x
y= -1.8777