Hi, Is there a reason why I'm getting those obviously wrong results?

Hi. Looks like a bug in the "implicit scalar expansion" according to the expression in matlab for vectorization. Use explicit SMath's vectorize as workaround.



Best regards.
Alvaro.

Thank you very much. At least there is a work around!

Wrote

Hi. Looks like a bug ...

Or not. It depends on how x^3 is interpreted. If the usual recursive definition is used, x^3 = (x^2)*x, then x^2 = x*x would be a dot product, while x^3 = (x*x) *x would be the product of a scalar times a vector, and the SMath result would be correct, although perhaps not the 'expected' one.



Best regards.
Alvaro.

Greetings,

Just as a note of 'Good Programming'; don't use the same variable when defining your declaring your function as you are passing into said variable for evaluation.

For example:

• instead of f(x):=x³ and x:=[0,1..3] and f(x)=▮;
• declare f(_z):=_z³ and x:=[0,1..3] and f(x)=▮;

This way you can keep local and global variables separate and avoid confusion. I've had instances where local variables became global, and I accidently used a global variable locally. Else, you end up asking yourself "which x is being using? x as in the variable or x as in the parameter of the function?"


May this be of Good Help;
⚜ Kenny Lemens, P.E. ᵂᴵ