funtion

funtion 求证series 是converge 或者diverge?funtion是：(sqrt(n) cos^2(n))/((n^2)-2) work as/serve as/act as/funtion as有什么区别RT determine if the second funtion is the inverse of the first function 数学题determine if the second funtion is the inverse of the first functiony=2x^2-3, X Vertical line test can be used to determine whether the graph of a relation is a funtion什么意思 英语翻译The optimization problem can then be considered as that of determining the statinary point of the Lagranian funtion. 英语翻译AND,ARRAY,BEGIN,CASE,CONST,DIV,DO,DOWNTO,ELSE,END,FILE,FOR,FUNTION,GOTO,IF,IN,LABEL,MOD,NIL,NOT,OF,OR,PACKED,PROCEDURE,PROGRAM,RECORD,REPEAT,SET,THEN,TO,TYPE,UNTIL,VAR,WHILE,WITH MATLAB 求微分方程数值解 y''-y'+y=0 y(1)=2,y(2)=0,x∈[0,20] MATLAB代码我的代码：funtion dy=fabc(x,y)dy=zeros(2,1);dy(1)=y(2);dy(2)=y(2)-y(1);[x,y]=ode45('fabc',[0 20],[2 0]);plot(x,y(:,1),'-') 请找出函数f(x,y)=ln(x^2+y^2)在点(2,1)位于矢量v=(-1,2)的方向的方向导数.原题为英文:find the directional derivative of the funtion f(x,y)=ln(x^2+y^2)at the point (2,1) in the direction of the vector v=. 求问一道Haskell题目,是一道英文题目,我害怕翻译不到位,还是把原题po上来了：Give the type and definition for a funtion called 'matches' that take an element and a list where the element is of the same type as the elements in 请教高手MATLAB约束非线性规划/一M文件的调试%1 目标函数function f=abfun(x);f=pi*130*(x(1)-0.75*x(3))^2/4+pi*[80^2-(x(1)-0.75*x(3))^2]*x(2)/4;%2 非线性约束funtion [c,ceq]=abfung(x);c(1)=40000-[0.75*pi*(x(1)-0.75*x(3))*x(2)]*10; 不理解这个MATLAB程序,能用数学公式帮我解释下吗.funtion y=ill(t,x)a=1;b=0.3;y=[a*x(1)*x(2)-b*x(1),-a*x(1)*x(2)]';ts=0:50;x0=[0.02,0.98];[t,x]=ode45(ill',ts,x0);[t,x]plot(t,x(:,1),t,x(:,2)),grid,pauseplot(x(:,2),x(:,1)),grid,