mathematics m assignment 2013\2014

jlk1234

请问大家做assignment a了没有。。。2014的。。。 求大家帮帮我啊！没有头绪怎样做。。

jlk1234

没有人拿mathematics m吗？

ystiang

还是那句， 至少提供题目！！

wxYGShowxyz

A differential equation has a family of solutions with different shapes of solution curves. It is interesting to investigate the shape of the solution curves.
We shall investigate the shapes of the solution curves for the first order differential equation
dy/dx = ax^(2) + bx + c, where a, b and c are constants and a ≠ 0

1. The direction field of a differential equation dy/dx = f(x,y) is a collection of short line segments through each of a sequence of point (x,y) with slope f(x,y) respectively. Thus, the direction field allows us to visualise the general shapes of the solution curves.
=====By sketching the direction field of the differential equation dy/dx = ax^(2) +bx +c, investigate the shapes of the solution curves for various values of a, b and c.
2.(a)find the general solution of the differential equation dy/dx = ax^(2) +bx +c
(b)sketch the solution curves passing through the origin for different values of a, b and c.
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 point
(b) find the range of values of x, in terms of a, b and c, for a solution curve to be increasing and decreasing.

Boice_Inspirit

我也是做到快疯了!!!!!我老师还说要下星期交>< 还要Viva呢~~~ T^T

munl

请问你是spm学生吗

jiayis

有谁开始了啊。。

shimayi0330

谁可以教我们怎样做？完全不会！！！！

鸭王之王

你們怎麼不冷靜下來，一起討論呢？