A.syms y; diff((1-x^2)*tan(x),2)
B.syms y; diff((1-x^2)*tan(x))
C.syms x; diff((1-x^2)*tanx,2)
D.syms x; diff((1-x^2)*tan(x),2)
第1题
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2题
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
此题为判断题(对,错)。
第8题
A.4
B.0
C.1
D.ln5
第9题
A.y=±16x/9
B. y=±9x/16
C.x/3±y/4=0
D.x/4±y/3=0
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