:
1. ;
2. ( ) .
F x a, b.
F = a tgx +Ö |x-2|, x < 2; (1)
F = (a2 - b2) Cos p, x = 2; (2)
F = (x-2)3 Sin px/2, x > 2. (3)
:
( ),
, , .
0, Sin Cos .
tgx tgx = sinx /cosx. , : cosx 0. .
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x>2 x<2
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=2
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if... then...
{ 2}
{ :}
{ : .... }
{ }
{ }
{ }
Const a=2.0; b=3.0;
Var x,F: real;
{ }
Begin
Writeln(' x'); { x}
Readln(x); { x}
if x>2 then F:= (x-2)*(-2)*(-2)* Sin(Pi */2);
if x=2 then F:= (a*a-b*b)* Cos (Pi);
if x<2 then if Cos (x) <> 0 then
F:= a*Sin(x)/Cos(x)+Sqrt (Abs(x-2))
else begin Writeln(' 0');
exit { } end;
{ }
Writeln(' x = ',x:6:2,' F = ',F:8:3); readln;
End.
if... then... else...;
{ 2}
{ ...... }
{ }
{ }
Const a=2.0; b=3.0;
Var x,F: real;
{ }
Begin
Writeln(' x'); { x}
Readln(x); { x}
if 0 x>2 then F:= (x-2)*(-2)*(-2)* Sin(Pi/2*x)
else if x=2 then F:= (a*a-b*b)* Cos (Pi)
else if Cos(x) <> 0 then
F:= a* Sin(x)/Cos(x)+ Sqrt(Abs(x-2))
else begin Writeln(' 0');
exit { } end;
{ }
Writeln(' x= ',x:6:2,' F= ',F:8:3); readln;
End.
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2- , :
Case < - > OF < > End
Case < - > OF < >
Else <> End
- ;
< > - :
< >: <>;
< > - , ;
: < >, < > , , . , . , , Else. Else .
, () .
