题目内容
（请给出正确答案）
[单选题]
如果定义符号函数syms x; u=sym（'sin（2*y+3*z)')，则limit（u)=（)
A.0
B.sin(3*z)
C.-1/2*sin(2*y+3*z)
D.2*sin(2*y+3*z)
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=().
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第2题
[图]A、syms x; f=sin(x+pi/4); y=taylor(f,x,2,’Order...
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)
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第3题
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已知调和函数u(x，y)=y3－3x2y，再求v(x，y)，使f(z)=u(x，y)+iv(x，y)解析．
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第4题
[图]A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,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)
第5题
[图]A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,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 y=diff(y,x,2)
F、clear x=2; y=(sin(1+log(x)))^2 y2=diff(y,x)
第6题
[图]A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,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)
第7题
[图]A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,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)
第8题
[图]A、clear syms x y=(sin(1+log(x)))^2 y2=diff(y,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 y=diff(y,x,2)
F、clear x=2; y=(sin(1+log(x)))^2 y2=diff(y,x)
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