对于void类型函数,调用时不可作为
A、void fun(double b[22])
B、void fun(double b[][22])
C、void fun(double b[][])
D、void fun(double b[22][])
A、fun(double b)
B、void fun(double b)
C、fun(double b[][22])
D、void fun(double b[][22])
A、fun([1,2,3])
B、fun("abcd")
C、fun(3.4)
D、fun((1,2,3))
,可行的是( )
A、建立函数文件ty.m function dy=ty(t, y) dy=[ y(2)*y(3); -y(1)*y(3);-0.5*y(1)*y(2)]; 调用函数文件: >> [t, y]=ode45(@ty, [0, 12], [0, 1, 1]); >> plot(t,y(:,1),'-',t,y(:,2),'*',t,y(:,3),'+')
B、建立函数文件ty.m function dy=ty(t, y) dy=[ y(2)*y(3); -y(1)*y(3);-0.5*y(1)*y(2)]; 调用函数文件: >> clear >> h=@ty; >> [t, y]=ode45(h, [0, 12], [0, 1, 1]); >> plot(t,y(:,1),'-',t,y(:,2),'*',t,y(:,3),'+')
C、>> ty=@(t, y) [ y(2)*y(3); -y(1)*y(3);-0.5*y(1)*y(2)]; >> [t, y]=ode45(ty, [0, 12], [0, 1, 1]); >> plot(t,y(:,1),'-',t,y(:,2),'*',t,y(:,3),'+')
D、>> [t, y]=ode45(@(t, y) [ y(2)*y(3); -y(1)*y(3);-0.5*y(1)*y(2)], [0, 12], [0, 1, 1]); >> plot(t,y(:,1),'-',t,y(:,2),'*',t,y(:,3),'+')
A、test(5)
B、test(5,8)
C、test(6,"#")
D、test(0,0,"*");
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