matlab基础问题 matlab基本编程题目。

matlab基础问题

clear
syms x y
f(x,y)=sym(cos(x sin(y(x)))==sin(y(x)))
dfdx=diff(f,x)
didx1=subs(dfdx,D(y)(x),dydx)
dydx=simplify(solve(didx1,dydx))
结果：
f(x, y) =

cos(x sin(y(x))) == sin(y(x))

dfdx(x, y) =

-sin(x sin(y(x)))*(D(y)(x)*cos(y(x)) 1) == D(y)(x)*cos(y(x))

didx1(x, y) =

-sin(x sin(y(x)))*(dydx*cos(y(x)) 1) == dydx*cos(y(x))
dydx =

-sin(x sin(y(x)))/(cos(y(x))*(sin(x sin(y(x))) 1))

matlab基本编程题目。

%maxmin
a=[3:5 9:20 2 1 6 7 8]
b=max(a)
c=min(a)
%loop
d=a(1)
e=a(1)
for i=2:length(a)
if d<a(i)
d=a(i)
end
if e>a(i)
e=a(i)
end
end
d
e

关于matlab的一个基础问题

(1)如楼上t=linspace(0,4*pi,20)
(2)直接用y1=sin(t)和y2=cos(2*t)

程序就三个语句：
t=linspace(0,4*pi,20)；
y1=sin(t)；
y2=cos(2*t)；