(. 2.9.3) hold on ( ).
. 2.9.3. .
,
>> plot(x,y,x,z);
:
plot(x1,f1,x2,f2,x3,f3,...),
x1,x2,x3,... ( x), f1,f2,f3,... , .
() subplot (. 2.9.4):
>> subplot(1,2,1); plot(x,y);
>> subplot(1,2,2); plot(x,z);
subplot , (), , ( , ).
. 2.9.4. .
. 2.9.5. .
fplot.
, MATLAB , . , , fplot, plot. fplot :
fplot('f(x)', [xmin xmax])
f(x), , x xmin xmax x. , , (. 2.9.5):
>> fplot('sin(x)/x', [-2*pi 2*pi])
plot fplot , x . , fplot , 0.2%. , fplot (, 1), ,
>> fplot('sin(x)/x', [-2*pi 2*pi], 0.001)
, , 0.1%. N, , fplot , N+1 . :
>> fplot('sin(x)/x', [-2*pi 2*pi], 0.001, 1000)
>> fplot('sin(x)/x', [-2*pi 2*pi], 1000, 0.001)