1楼：阿弥陀佛苏超
^^1》plot[exp[x]-3 x x,]
findroot[exp[x]-3 x x,]
findroot[exp[x]-3 x x,]
findroot[exp[x]-3 x x,]
2》1>findroot[x^5 + 5 x + 1, ]
2>plot[x sin[x], ] 看图模仿第一题的做法
3>模仿上题做法
3》1>limit[(x - sin[x])/x^3, x -> 0]
2>y[x_] := exp[x] cos[x]
d[y[x], ]
3>integrate[exp[x x], ]
4>integrate[x^4/(25 + 4 x^2), x]
5>series[sqrt[1 + x], ]
6>trigreduce[d[exp[sin[1/x]], ] /. x -> 2]
4》1>a = , , }
inverse[a] // matrixform反函数
eigenvalues[a]特征值
eigenvectors[a]特征向量
2>不会
5》1>g1=plot[pdf[normaldistribution[0, 1], x], ]
g2=plot[pdf[normaldistribution[-1, 1], x], ]
g3=plot[pdf[normaldistribution[1, 1], x], ]
show[g1,g2,g3]
2>模仿上面
6》1>parametricplot3d[, , ]
2>plot3d[sin[x y], , ]
废老劲了
谁能帮忙做两道数学实验题,mathematica的,要详细程序,有运行结果更好急用,谢谢!!!
2楼：匿名用户
1 作sinx的n阶taylor(n=10,30,60)并比较图像
in[1]:=
tyl1[n_,x_]:=normal[series[sin[x],]]
in[2]:=
tb[c_]:=table[tyl1[n,x],][[c]]
in[3]:=
l2:=
in[4]:=
myfun:=tb[l2]
plot1=plot[
evaluate[myfun],,plotstyle\[rule],plotlabel->];
2 求sinx/x在[0,1]上的积分近似值
in[33]:=
limit[integrate[sin[x]/x,x],x\[rule]0]
3 物体从1000米高处落下,当高度为100米时,时间t=?
in[40]:=
\!\(sol = \(t /. solve[y == 1/2*g*
t\^2, t]\) /. \)
in[42]:=
t=sol[[2]]
4 生产安排问题
???什么意思？
5 解方程组ax=bi
行列式a的元素为(按行):4 1 -1 -1,1 -5 1 1,1 -1 6 1,1 -1 1 -7
什么意思？？
跪求高手帮做份数学实验 用wolfram mathematica做的
3楼：匿名用户
你好，我是南京邮电大学数学实验老师，请独立完成作业，否则记作不及格
mathematica数学实验对cosx到3的图形
4楼：匿名用户
qujian = ;
cishu = 20;
for[i = 1, i <= cishu/2, i++,a = normal[series[cos[x], ]];
tu[i] = plot[a, , axesorigin -> ];
]table[, ]
或者下面的:
a =.
qujian = ;
cishu = 20;
for[i = 1, i <= cishu/2, i++,a[i] = normal[series[cos[x], ]];
tu[i] = plot[a[i], ,
axesorigin -> ];
]table[, ]
英语练习题，急求答案！
5楼：落莫空灵
单项选择：
1.do you want to know ___b_ about her?
a.nothing b.something c.anything d.thing
2.__d__ animals is my favourite.
a.keep b.keeps c.to keep d.keeping
3.on sundays i often go _b___ with my father.
a.swim b.swimming c.swims d.to swim
4.my uncle works __d__ a farm and he works ____ a farm school.
a.in,in b.on,on c.in,on d.on,in
5.they can _a___ do it.
a.also b.too c.be d.either
6.i'm fond __d__ reading books.
a.on b.at c.in d.of
7.he does well __a__ english.
a.at b.in c.on d.of
8.i don't like this colour,_a___.
a.too b.also c.either d.so
9.aren't you a student?__a__.
a.yes,i am. b.no,i'm not. c.yes,i do. d.no,i don't.
10.i often do my homework __c__ two hours a day.
a.in b.at c.for d.on
11.different people __b__ different hobbies.
a.has b.have c.is d.are
12.the book __d__ music is very useful.
a.in b.on c.from d.with
13.let her __b__ go out to play.
a.doesn't b.don't c.not d.to
14.you can feed the sheep __d__ grass.
a.to b.from c.with d.at
15.you can feed grass __d__ the sheep.
a.from b.at c.with d.to
给下列动词加ing：
1.get__getting__2.close_closing___3.
clean__cleaning__4.begin__beginning__5.fish__fishing__6.
jog__jogging__
7.raise_raising___8.see__seeing__9.
walk_walking___10.study__studying__11.run_running___12.
say__saying__
13.talk__talking__14.jump__jumping__15.mop__mopping__
将下列词组译成英语：
1.种树__plant tree__2.种菜_cultivate land___3.
种花_cultivate flowers___4.种小麦_plant wheat___5.饲养动物_feed animal___
6.收集光盘_collect cd___7.拍照_take the photo___8.
制作工具_make tool___9.去钓鱼__go fishing__10.采访人们__interview people__
写下列句子的同义句：
1.is he good at fishing?
__dose__ he _do___ __well__ in fishing?
2.sometimes he catches nothing.
sometimes he __dosen't__ catch __anything__.
3.there is no cat in the room.
there __is__ __not__ a cat in the room.
4.i don't have any brothers.
i __have__ _no___ brothers.
5.do you want to know about him?
__do___ you __like__ __to__ know about him?
用所给词的适当形式填空：
1.gaowei's mother enjoys __farming__ (farm) very much.
2.please put __their__ (they) coats over there.
3.my sister __dose__ (do) well in skating.
4.look!kate __is writing__ (write) at the desk.
5.the books are on the _teacher's___ (teacher) desk.
6.my parents are both __driver__ (drive).
7.that tall man is a good _cook___ (cook).
8.he is good at _fishing___ (fish).
9.there __is__ some money in the box.(be)
10.mr brown is good at __working__ on a ***puter.(work)
句型转换：
1.my grandpa's hobby is fishing.（一般疑问句）
__is__ your grandpa's hobby _fishing___?
2.the farmer plays cards on his farm.（对画线部分提问，画线的是on his farm）
_where___ _dose___ the farmer _play___ _cards___?
3.let him go now.（否定句）
let him _don't___ _go___ now.
4.she doesn't go out in the evening.（肯定句）
she _gose___ __out__ in the evening.
5.their hobbies are different.（同义句）
their hobbies _are___ _not___ _same___.
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