I'd need to see the entire program/worksheet.

Vector(4, {(1) = ` 1 .. 99 `*Vector[column], (2) = `Data Type: `*anything, (3) = `Storage: `*rectangular, (4) = `Order: `*Fortran_order})

That's nonsense. Is that the contents of roo?

There's an animation toolbar that appears when you play an animation. Look for the icon labelled FPS. That's Frames Per Second. The lowest that you can set it is 1 FPS.

@Christopher2222 The osculating circle is the circle tangent to a curve which most closely approximates the curve at the point of tangency (among all tangent circles). The curvature is (by definition) the reciprocal of the radius of the osculating circle.

@K5ky:When I replace the equation with a name that points to it, this returns FAIL instead.Any ideas why?

NextZero takes an operator, not an expression, as its first argument.

@K5ky:When I replace the equation with a name that points to it, this returns FAIL instead.Any ideas why?

NextZero takes an operator, not an expression, as its first argument.

@williamov It's difficult to generalize that. It will work if you write a separate top-level assignment statement for each variable. But if you try to do it in a loop or procedure, or iterating over a list of names in a set or list, it gets tricky.

@williamov It's difficult to generalize that. It will work if you write a separate top-level assignment statement for each variable. But if you try to do it in a loop or procedure, or iterating over a list of names in a set or list, it gets tricky.

One reason that the absolute-value form might be preferred over the piecewise form is that the former makes the continuity obvious. One reason that the absolute-value form might be preferred over the list-of-points form is that most symbolic computation commands will not take the latter.

@whenyourestrange Actually, my command above can be simplified slightly: One of the two zero vectors (< 0 | 0 >), it doesn't matter which one, can be removed.

@whenyourestrange Actually, my command above can be simplified slightly: One of the two zero vectors (< 0 | 0 >), it doesn't matter which one, can be removed.

@williamov To put if inside an expression, do

`if`(assigned(h251), h251, 0)

@williamov To put if inside an expression, do

`if`(assigned(h251), h251, 0)

@HDN46 There are only two ways to get out of the loop for n from 0 to 19: Either n goes above 19, or the break statement (after the then in the loop) is executed. The break is executed when we have a non-solution: either a non-integer was encountered (r<>0) or two consecutive zeroes were found. Otherwise, we have a solution, and n goes above 19, so it is 20. 

Does that answer your question?

@HDN46 There are only two ways to get out of the loop for n from 0 to 19: Either n goes above 19, or the break statement (after the then in the loop) is executed. The break is executed when we have a non-solution: either a non-integer was encountered (r<>0) or two consecutive zeroes were found. Otherwise, we have a solution, and n goes above 19, so it is 20. 

Does that answer your question?

@marc005 What trouble did you have trying to make it into a procedure?

@marc005 What trouble did you have trying to make it into a procedure?