Could you give some details?

 Which mode? (worksheet/document)

 Any prompted messages?

the answer is 

i use worksheet

I wrote your program in Maple 11

but the following equation does not work

plot(x, y, scaling=constrained);

Amr

I wrote your program in Maple 11

but the following equation does not work

plot(x, y, scaling=constrained);

Amr

it a great work. Thanks

it a great work. Thanks

 I want to sum the expression as follows

if i=1   i want to sum over k=2..M

if i=2 i want to sum over k=1..M  except k=2

if i=3 i want to sum over k=1..M  except k=3

.

if i=M i want to sum over k=1..M-1

Dr. Amr

 I want to sum the expression as follows

if i=1   i want to sum over k=2..M

if i=2 i want to sum over k=1..M  except k=2

if i=3 i want to sum over k=1..M  except k=3

.

if i=M i want to sum over k=1..M-1

Dr. Amr

thanks Joe Riel. It is a great information

thanks Joe Riel. It is a great information

thanks a lot every one,

but if the expressions  c[i,k]=i+k. takes the form i+k/i-k

Amr

thanks a lot every one,

but if the expressions  c[i,k]=i+k. takes the form i+k/i-k

Amr