画出函数[img=229x25]17de91233f086fa.png[/img],在区间[0,3]上的图形, 给[img=27x18]17de91234bea1e9.png[/img]坐标轴分别加标记[img=51x25]17de9123588654f.png[/img]。
A: Plot[(x+1)(x-1)(x-1.5),{x,0,3},AxesLabel→ {"x","f(x)"}]
B: Plot[(x+1)(x-1)(x-1.5),AxesLabel→ {"x","f(x)"},{x,0,3}]
C: Plot[(x+1)(x-1)(x-1.5),{x,0,3},AxesLabel→"x","f(x)"]
D: Plot[(x+1)(x-1)(x-1.5),AxesLabel→{x,f(x)},{x,0,3}]
A: Plot[(x+1)(x-1)(x-1.5),{x,0,3},AxesLabel→ {"x","f(x)"}]
B: Plot[(x+1)(x-1)(x-1.5),AxesLabel→ {"x","f(x)"},{x,0,3}]
C: Plot[(x+1)(x-1)(x-1.5),{x,0,3},AxesLabel→"x","f(x)"]
D: Plot[(x+1)(x-1)(x-1.5),AxesLabel→{x,f(x)},{x,0,3}]
举一反三
- 画出函数[img=229x25]180307321f795c8.png[/img],在区间[0,3]上的图形, 给[img=27x18]1803073227d485d.png[/img]坐标轴分别加标记[img=51x25]1803073230473f4.png[/img]。 A: Plot[(x+1)(x-1)(x-1.5),{x,0,3},AxesLabel→ {"x","f(x)"}] B: Plot[(x+1)(x-1)(x-1.5),AxesLabel→ {"x","f(x)"},{x,0,3}] C: Plot[(x+1)(x-1)(x-1.5),{x,0,3},AxesLabel→"x","f(x)"] D: Plot[(x+1)(x-1)(x-1.5),AxesLabel→{x,f(x)},{x,0,3}]
- 【单选题】用if语句表示如下分段函数f(x),下面程序不正确的是()。 f(x)=2x+1 x>=1 f(x)=3x/(x-1) x<1 A. if(x>=1):f=2*x+1 f=3*x/(x-1) B. if(x>=1):f=2*x+1 if(x<1):f=3*x/(x-1) C. f=2*x+1 if(x<1):f=3*x/(x-1) D. if(x<1):f=3*x/(x-1) else:f=2*x+1
- 设函数f（x）=x+1/x，则f（x-1）=（） A: x/x+1 B: x/x-1 C: 1/x+1 D: x/x-1
- 下列函数在x=0处连续的是（ ） A: f（x）=-1，(x≤0)x-1，(x＞0) B: f（x）=lnx C: f（x）=|x|x D: f（x）=-1，(x＞0)0，(x=0)1，(x＜0)
- 已知f（x+1）=-f（x）且f(x)=1，(-1＜x＜0)0，(0≤x＜1)，则f（3）=（ ） A: -1 B: 0 C: 1 D: 1或0