Mathematics M Assignment 2013/2014

whyiiyhy

Anyone done assighment mathematics M sem 1 ? can share it the answer of questions 3 ?
(a) Determine the conditions for a solution curve
    (i) to be increasing and have no turning point
    (ii) to be decreasing and have no turning point
    (iii) to have turning points
Thanks for who sharing with me.

xiaosoh

樓主,可以發一下這個assignment的 之前的做法嗎??XDD

Mushishi

我的老师说只要写condition就可以了。
好像 x<0 or......
MathsM的课本里面有。
page 167-172

xiaosoh

Mushishi 发表于 2-9-2013 04:11 PM
我的老师说只要写condition就可以了。
好像 x

關於第幾課的???    大概要怎樣做? 感謝~

shimayi0330

谁做了，我完全不会做。。。可以教我怎样做吗？？？

Mushishi

xiaosoh 发表于 2-9-2013 10:03 PM
關於第幾課的???    大概要怎樣做? 感謝~

Chapter 4 and chapter 6.
That's all I know. I'm trying to figure out how to do too.
Teacher sisnt teach also. Next week have to pass up. Haiz

49woS

d direction field u cn use this website
--->>  http://www.math.ubc.ca/~israel/applet/dfplotter/dfplotter.html
(must download JAVA software)

if u understand d question u will know how to do.
u try to ask ur teacher.

Mushishi

49woS 发表于 3-9-2013 05:25 PM
d direction field u cn use this website
--->>  http://www.math.ubc.ca/~israel/applet/dfplotter/dfpl ...

Don't know how to use. XD
How many graph you draw for question 1??

For queation 2 (a)
Just have to integrate only right?

49woS

Mushishi 发表于 3-9-2013 06:30 PM
Don't know how to use. XD
How many graph you draw for question 1??

exactly my teacher said just draw 4 graph tat is enough for question 1 and question 2~~

u must download d JAVA softwere(on the top) it will ask u want to download it or not...

after u download, u open back the website and it will show you something(i don't know how to said ) and u click accept~~
then the website can use le!!!!

49woS

Mushishi 发表于 3-9-2013 06:30 PM
Don't know how to use. XD
How many graph you draw for question 1??

yup the question 2(a) just do integration only~
but i want to remind you the D must be zero!!!!
b'coz the question said tat it passing through ORIGIN
it mean a=R , b=R , c=R , d=0 (*R is real number)

Mushishi

49woS 发表于 4-9-2013 06:10 PM
yup the question 2(a) just do integration only~
but i want to remind you the D must be zero!!!!
...

Thank you =)

Here is another easier one I found.
http://www.mathscoop.com/calculus/differential-equations/slope-field-generator.php

Got x-axis and y-axis

For queation 1, I did 4 graph.
1) a= + , b=0, c=+
2)a=- b=+ c=-
3) a=- b=+ c=+
4) a=+ b=+ c=-

That's all.

I asked my teavher today about question three. She also not sure how to find the range of values of x in term of a, b and c.
Haiz

49woS

Mushishi 发表于 4-9-2013 06:27 PM
Thank you =)

Here is another easier one I found.

Haha~~

just determine and explain it only for 3(a)...
use the fomulae file:///C:\Users\SOWFAM~1\AppData\Local\Temp\msohtmlclip1\01\clip_image002.png to prove it, u also can using graphing to show where is my +x or -x

Mushishi

49woS 发表于 4-9-2013 06:55 PM
Haha~~

just determine and explain it only for 3(a)...

But it's in terms of a, b and c.
So can we substitute a number as a, b or c??

49woS

Mushishi 发表于 4-9-2013 07:47 PM
But it's in terms of a, b and c.
So can we substitute a number as a, b or c??

no need... just leave the answer in term of a,b,c \

of course we don't know which one we need to put on d negative site and which one we put on d positive site so tat we LET it hv a value~
For example :-

a=6, b=-18, c=3
we subtitute d value in site d equation
then use d calculator calculte it to find if sub d value to +(plus and minus choose plus) what number we get and sub d value to -(plus and minus choose minus)
after tat we cn see clearly why (- b^2-4ac) is at left hand site and (+ b^2-4ac) is at right hand site~~
and d method to find the range u must cut the graph by three part and see which part the graph is showing positive which one showing negative.

hope can help you~~ tat's a little bit difficult to understand

nicole_jing

Mushishi 发表于 2-9-2013 04:11 PM
我的老师说只要写condition就可以了。
好像 x

什么出版社的math？？

nicole_jing

49woS 发表于 4-9-2013 08:25 PM
no need... just leave the answer in term of a,b,c \

of course we don't know which one we need t ...

i really dont know do ah...
can share any example ma????
my teacher dont teach any for this assignment and this week want to pass up already....if not my teacher dont want to accept any assignment in next week already.....help me ah....

49woS

nicole_jing 发表于 10-9-2013 07:15 PM
i really dont know do ah...
can share any example ma????
my teacher dont teach any for ...

u need wat question eg??
just 1 eg only o...coz we also do so hard hope u understand...

nicole_jing

49woS 发表于 11-9-2013 06:07 PM
u need wat question eg??
just 1 eg only o...coz we also do so hard hope u understand...

okok....tq...第一题的给一个eg，然后第二题用回这个eg ，我要知道一个graf从头到尾要怎样做就可以了...

49woS

nicole_jing 发表于 11-9-2013 07:43 PM
okok....tq...第一题的给一个eg，然后第二题用回这个eg ，我要知道一个graf从头到尾要怎样做就可以了...
...

哈哈～～
这些答案(graph)都是大同小异的，因为Q1和Q2之间的差别就在于一个有direction field和一个是普通的graph而已。
你的老师有说第一题能用电脑来画吗？？

如果能的话相信这个星期你就能交你的PBS了～～
如果不能那只好辛苦点画了。。
给你这个网址来 参考 --》 http://www.math.ubc.ca/~israel/applet/dfplotter/dfplotter.html

你的电脑有JAVA application吗？？因为这网需要它。如果没有也没关系因为你也可以在那里download下来！！
祝你好运～

49woS

至于equation是自由发挥～就大胆的放个号码下去吧
你“画”了graph后 去keyboard找PrintScreen然后paste去Paint然后Crop下来 就可以了～！！
   

就像这个（可是这个graph算是错的，因为我的scale太过小了～～要去field spacings把那个原本的0.1 换去0.5就跟上面那个一样）

  
好好研究吧