uc

uc()

:: Create a new indeterminate for an undermined coeficient.

return

indeterminate with its vtype 1.

• At every evaluation of command uc(), a new indeterminate in the sequence of indeterminates _0, _1, _2, ... is created successively.
• Indeterminates created by uc() cannot be input on the keyboard. By this property, you are free, no matter how many indeterminates you will create dynamically by a program, from collision of created names with indeterminates input from the keyboard or from program files.
• Functions, rtostr() and strtov(), are used to create ordinary indeterminates (indeterminates having 0 for their vtype).
• Kernel sub-type of indeterminates created by uc() is 1. (vtype(uc())=1)

[0] A=uc();
_0
[1] B=uc();
_1
[2] (uc()+uc())^2;
_2^2+2*_3*_2+_3^2
[3] (A+B)^2;
_0^2+2*_1*_0+_1^2

References

section vtype, section rtostr, section strtov.

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