y=quad('x.*log(1+x)',0,1)这是给log(1+x)求积分么?

y=quad('x.*log(1+x)',0,1)这是给log(1+x)求积分么? matlab int函数没有显式积分 vpa两个例子：1.y=x*log(x^4)*asin(1/x^2);int(y,x,1,3)；提示没有解析解vpa（ans）得到数值结果,和quad函数的结果比较也是一样的.2.syms x yvpa(int( int( sqrt(1+x^2*sin(y)),x,0,1),y,0,2*pi) matlab y=(600000*600000*6*4*0.00424^2*(10^-12)*log(0.025/0.01674)+103000*103000*0.003*(2*10^-5)^3)/(0.003*(2*10^-5)^3+6*4*0.00424^2*(10^-12)*log(0.025/0.01674));fun=inline('x.*(y-(y-103000^2)*log(x./0.01674)/log(0.025/0.01674)).^0.5');z=quad(fun,0.01 matlab数值积分函数的应用下面的代码可运行F = @(x)1./(x.^3-2*x-5);Q = quad(F,0,2); 为何下面的代码不能运行F = @(x)exp((log(x)-1)^2);Q = quad(F,0,2); 出错信息为：Error using ==> mpowerMatrix must be square.Error in ==> @ 可以说log a x +log a y=log a log 9 X/Y=1/2(log 3 X - log 3 Y) log 9 X/Y=1/4 3log 3 X =2log 3 Y find X and Y 关于matlab的quad函数y='4*a*sqrt(1-(c/a)^2*sin(x)^2))';true=quad(y,0,2*pi,10^-6);为什么输入这样的指令总是出现如下错误Error using ==> inline.subsref at 14Not enough inputs to inline function.Error in ==> quad at 77y = f(x,varargi log(2x)+log(3y)-log(2z) 怎么化简?log3(x^2-2x-6)=2 log(3x+6)=1+log(x)求解,求每步详...log(2x)+log(3y)-log(2z) 怎么化简?log3(x^2-2x-6)=2 log(3x+6)=1+log(x)求解, 我的MATLAB程序运行这条指令时老是出不了结果 quad('x.*log(1+x)',0,1); 程序根本没有显示结果 设log(a)（x+y)=根号三,log(a)x=1,求log(a)y fun1=@(x,y,z)log((x^2+y^2+z^2);g=triplequad(fun1,90,110,50,70,20,40)Error using ==> mpowerInputs must be a scalar and a square matrix.Error in ==> @(x,y,z)log(x^2+y^2+z^2)Error in ==> quad at 77y = f(x,varargin{:});Error in ==> triplequad>innerintegr 换底公式的使用!为什么 y=log(1/2) X = - log(2)X 函数y=log(1/2)2x+log(1/3)x的单调区间为 求函数y=log小3 x+log小x 3-1的值域rt 已知x>1,y>1,z>1,log(x)W=24,log(y)W=40,log(xyz)W=12求log(z)W log(2x)+log(3y)-log(2z) 怎么化简? log3(x^2-2x-6)=2 log(3x+6)=1+log(x)求解. 已知log（2）[log（3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x+y的值 y=1/log(1-2x)的定义域