Implicit multiplication not working!?

[COALROCK8642]

Why is this not working? May be we need guide to settings.

[hanna-kn]

What is it that does not work as you expect?

The only odd thing I notice in the screenshot is that min decimals seems to be set to 10.

The interpretation of 1/2x is determined by "parsing mode" setting (under Parsing & Calculation in preferences).

[COALROCK8642]

But what will I do if my expression is 2pi/2*4*root(2,2) I expect this to be 2*pi/8*root(2,2) and it comes ((2 × pi)/2) × 4 × root(2, 2)

[COALROCK8642]

In reply to my previous comment, this works, 2pi/(2×4)root(2,2) But I rather have option to express values as expressions All numerator stuff '/' All denominator stuff Taken that we are expected to use () for any compound fractions.

[hanna-kn]

So, you want an option to always (both with implied multiplication and when using a multiplication sign) evaluate multiplication before division (i.e. multiplication having higher precedence)?

[COALROCK8642]

Yes! Yes! Yes! Exact words. Within brackets (if any) all multiplications will have presedence and then divisions will happen.

[hanna-kn]

This would not be difficult to implement, but it seems a bit unusual. Is explicit multiplication performed before division anywhere else?

[COALROCK8642]

This would not be difficult to implement, but it seems a bit unusual. Is explicit multiplication performed before division anywhere else?

But this is nesscary when people will solve compound fractions.

[COALROCK8642]

for example, (x1*x2/y1*y2)/z1*z2 can be just written x1*x2/y1*y2//z1*z2 and will process like, ((x1*x2)/(y1*y2))/(z1*z2) and /,//,/// will scale according to compound fractions.

And so, another example, (x1*x2/y1*y2)/((z1*z2)/(w1*w2)) can be just written x1*x2/y1*y2//z1*z2/w1*w2 and will process like, ((x1*x2)/(y1*y2))/((z1*z2)/(w1*w2)) and /,//,/// will scale according to compound fractions.

[hanna-kn]

My question remains. Is this notation and order of operations used anywhere?

It seems safer to use parentheses instead, and it does remove the necessity of parentheses for expressions with addition or subtraction in the numerator or denominator (e.g. (x1+x2)/(y1+y2)).