i want someone to help me with this intergration w := (int(K/(y-y1), y = -s .. s))/(4*Pi) he want to know if y1 is between s and -s ,while y1 really exist between s and -s thanks

hello could u help me with this error printf(cat(`$`(`%12.5 f`, 4)), `$`(vij(1, 1)[k], k = 1 .. 4)) Error, (in fprintf) unknown format code ` ` THANKS

hello how to make integration of a a matrix????????

i have two questions here 1st how to do for llop and save the results in array or vector like : > for i to 5 do f[i] := 5.*i end do; the 2nd question is how to take the square root of each element of a give matrix like: A:=Matrix(9,9,9) how to take sqrt of elements to make it (9,9,3) ,and if i have two matrices A(9,9) and another one B(9,9), how to divide each element of A to its corresponding value in B???? i know maybe they are easy questions ,but iam just beginner .

i have a question with plotting i have a vector X of length (10) and matrix U, that its size is (10,20), how can i plot the vector X with each column in matrix U in the same figure ????????????????