Maple 12 Questions and Posts

These are Posts and Questions associated with the product, Maple 12

Plot([x^2, subs(x=0, 2*x)], axis[1]=[color=white]);

can not find the y=0 this red line

how to plot y=x^2 and x = 0 on the same graph to show the slope at x=0 ?

How to derive from n*x^(n-1) to limit definition ?

How to proof exp(x) is transcendental function without using calculus?

How to convert diff(f(t),t) + diff(g(t),t)

to diff(t(f,g), f)+ diff(t(f,g), g)


How to cmaple or mw file maple dualaxisplot output to jpeg file after press and run?

How to cmaple print int(f(x),x) after append to text command instead of /


I use append and cmaple to run

originally can See result in real time even if open text file

but suddenly text file become 0KB

when I copy text file and paste 

0 KB become 3 KB 

but the program can not further output to text file and no error shown




can not raise the datalimit above hard limit


my new notebook has 32GB memory


do i need to assign datalimit with kernelopts?


I remember i set a trick to protected this file

now I can read and run 

but return above error

does it mean that I do not need to set limit?

Minimise(eq1, {eq2>=0,eq3>=0,eq4>=0, a1<>0,a2<>0,a3<>0,a4<>0})

can not handle strict inequalities error



Is there extendable combinatorics experiment architect system design

such as new method can combine or use with old method and find relationship between them , these kind of big data system design in combinatorics experiment design?


I have an optimization problem subjects with a system of ordinary differential equations with initial conditions.

I would like to obtain u^star, x^star and y^star solution of my problem 

I prefer if possible we implement hamilton jacobi bellman if possible




how to express eigenvector or eigenvalues in terms of fibonacci or lucas or golden ratio?

fibonacci ratio has many 

f(n)/f(n-1) , all eigenvector can not divided by any one of them


how to verify lambda calculus is computable and realizable in maple?

is it possible to realize lambda calculus into algebra ?

how to use β-reduction to convert algebra function into lambda calculus?

is there a way to convert back ?

how to combine multiple lambda calculus into one lambda calculus and check computable and then convert back to algebra function?

Which sorting related with famous sequence

for example 

sorting differential equation in a list

then access the list with famous sequence as index such as using

after access with sequence as index, use choose function to get combinations then most result are isomorphism differential ideals?

is there methods about this sorting in Richard Stanley Combinatiric book? which page of it?

Last month I still can read file


read “c://Users//hello//Documents//h.m”


now it return error

no read access c://Users//hello//Documents/


in security I add the m file into readable 

I saw open file at c drive has many shell folders 

i just add m file

but still the same error

i unencrypted m file by window properties

still the same error

i save file into maple roaming directory under 12 folder , still the same error

i save into maple installation directory maple 12 , still the same error

3 4 5 6 7 8 9 Last Page 5 of 31