Alger

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11 years, 76 days

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These are replies submitted by Alger

Thank you for the answer

I do what suggest but with no succes

Could you see the code

Regards

Thank you for the answer

I do what suggest but with no succes

Could you see the code

Regards

Thank you for the answear. I have investigated the probem and I solve it with changing the position of the ground.

transistor_onduleu.msim

Thank you for the answear. I have investigated the probem and I solve it with changing the position of the ground.

transistor_onduleu.msim

I want to use the NPN transistor (BJT) as a switch like a perfect diode in a simple R circuit fed with sinusoidal voltage.

How to do that ?

I want to use the NPN transistor (BJT) as a switch like a perfect diode in a simple R circuit fed with sinusoidal voltage.

How to do that ?

Thanks for reply and answer, but you can only execut one of the 2 programs with !!! and the other worksheet with only ! (line by line command)

In win 7, I can get only one maple window. What is batch file ?

Thanks for reply and answer, but you can only execut one of the 2 programs with !!! and the other worksheet with only ! (line by line command)

In win 7, I can get only one maple window. What is batch file ?

@Markiyan Hirnyk 

Ok, thanks

@Markiyan Hirnyk 

Ok, thanks

Have you installed maple before matlab ?

When installing maple 15, it detect your matlab installation and ask you if you want to use maple toolbox

The simple way is to install matlab before maple

Have you installed maple before matlab ?

When installing maple 15, it detect your matlab installation and ask you if you want to use maple toolbox

The simple way is to install matlab before maple

Your procedure work well. With maple you can write a procedure with a more simple way using directly the formula like:

it := proc (a, b, f, n) local val; val := evalf((1/2)*(b-a)*(Sum(f(a+i*(b-a)/n)+f(a+(i+1)*(b-a)/n), i = 0 .. n-1))/n) end proc;

Your procedure work well. With maple you can write a procedure with a more simple way using directly the formula like:

it := proc (a, b, f, n) local val; val := evalf((1/2)*(b-a)*(Sum(f(a+i*(b-a)/n)+f(a+(i+1)*(b-a)/n), i = 0 .. n-1))/n) end proc;

@suddenman 

First:

Replace this line : bc := (D[1](u(x, t)))(0) = 0, (D[1](u(x, t)))(l) = 0, u(x, 0) = cos(2*Pi*x/l)

with bc:=D[1](u)(0,t)=0,D[1](u)(l,t)=0,u(x,0)=cos(2*Pi*x/l);

But there is problem in your boundary conditions which should be revised

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