A、syms x;I1=int(exp(-x^2/2),f,0,inf)

B、syms x;I1=int(exp(-x^2/2),0,inf)

C、syms x;I1=int(exp(-x^2/2),x,0,inf)

D、syms x;I1=diff(exp(-x^2/2),x,0,inf)

A、f=exp(x)(2+2^x); int(f,x)

B、f=exp(x)*(2+2^x); int(f,x)

C、syms x; f=exp(x)(2+2^x); int(f,x)

D、syms x; f=exp(x)*(2+2^x); int(f,x)

A、syms x; f=cos(x+pi/4)/(x^2+2*x+4); y=taylor(f,x,2,’Order’,6)

B、syms x; f=cos(x+pi/4)/(x^2+2*x+4); y= fseries(f,x,2,’Order’,6)

C、syms x; f=cos(x+pi/4)/(x^2+2*x+4); y=fourier(f,x,6,’Order’,2)

D、syms x; f=cos(x+pi/4)/(x^2+2*x+4); y=taylor(f,x,6,’Order’,2)

A、syms x; f=sin(x+pi/4); y=taylor(f,x,2,’Order’,6)

B、syms x; f=sin(x+pi/4); y= taylor(f,x,’Order’,6,2)

C、syms x; f=sin(x+pi/4); y=taylor(f,’Order’,6)

D、syms x; f=sin(x+pi/4); y=taylor(f,x,6,’Order’,2)

A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,x,2)

B、clear syms x y=sin(1+log(x))^2 diff(y,x,2)

C、clear syms x y=sin(1+log(x)^2) y2=diff(y,x,2)

D、clear syms x y=sin(1+log(x))^2 y2=diff(y,x)

E、clear syms x y=(sin(1+log(x)))^2 y2=diff(diff(y,x),x)

F、clear syms x y=(sin(1+log(x)))^2 y1=diff(y,x) y2=diff(y1,x)

A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,x,2)

B、clear syms x y=sin(1+log(x))^2 diff(y,x,2)

C、clear syms x y=sin(1+log(x)^2) y2=diff(y,x,2)

D、clear syms x y=sin(1+log(x))^2 y2=diff(y,x)

E、clear syms x y=(sin(1+log(x)))^2 y2=diff(diff(y,x),x)

F、clear syms x y=(sin(1+log(x)))^2 y1=diff(y,x) y2=diff(y1,x)

A、F=limit(f,x)

B、F=int(f,x)

C、F=linspace(f,x)

D、F=diff(f,x)

定积分的MATLAB命令为

A、int(f(x),a,b)

B、int(f(x),x,a,b)

C、A、B都对

D、A、B都不对