3
MATLAB
.
, .
1. for.
:
for var = a1: a2: a3
end
var , a1 a3 a2 ( a2 , a2 = 1). (,) (;). , var a3.
2. while.
:
while
end
, ( , ).
.
break for while. .
return .
continue , .. for while, , .
continue , .
for.
for x=1:3:10
y=x/4
end
:
y =
0.2500
y =
y =
1.7500
y =
2.5000
.
.. 57
s=0
for k=1:1:57
s=s+1./k^2;
end;
( ) -, :
for k=[2 5 7 8 11 15 25]
, k 2, 5, 7, 8, 11, 15 25.
:
A=[1 2; 3 4];
for k=A
A, .. . , .. -. , , , A:
S=0; A=[1 2; 3 4];
for k=A
S=S+sqrt(k(1)^2+k(2)^2);
end;
12 0 11 while:
i=1; t=0;
while t<=11
y(i)=sin(t)
i=i+1;
t=t+1;
end
.
s=0; k=1; u=1;
while u>1.e-8
s=s+u;
k=k+1;
u=1./k^2;
end
( ): , , while, .
|
|
, , , , Enter . Enter , (>>) . , , MATLAB , ( ). Enter. end MATLAB . , , >>.
MATLAB , , M-, , , . , ,
k=0;
for x=0:0.1:100
k=k+1;
y(k)=sin(x);
end;
x=0:0.1:100;
y=sin(x);
M-
1.4.
: , , , ,
-
nx=5; n=10;
x=[0.1 0.3 0.4 0.7 1];
s=[0 0 0 0 0];
line='---------------------'; % 21(-)
disp(line), disp(' x s'), disp(line) % 6()(x)10()(s)
for i=1:nx
for k=1:n
s(i)=s(i)+(-1)^k*x(i)^k/(k*(k+1));
end
disp([x(i),s(i)]),disp(line)
end
---------------------
x s
---------------------
0.1000 -0.0484
---------------------
0.3000 -0.1369
---------------------
0.4000 -0.1777
---------------------
0.7000 -0.2886
---------------------
1.0000 -0.3822
---------------------