ptozp

ptozp(poly)

:: Converts a polynomial poly with rational coefficients into an integral polynomial such that GCD of all its coefficients is 1.

return

polynomial

poly

polynomial

• Converts the given polynomial by multiplying some rational number into an integral polynomial such that GCD of all its coefficients is 1.
• In general, operations on polynomials can be performed faster for integer coefficients than for rational number coefficients. Therefore, this function is conveniently used to improve efficiency.
• Function red does not convert rational coefficients of the numerator. You cannot obtain an integral polynomial by direct use of the function nm(). The function nm() returns the numerator of its argument, and a polynomial with rational coefficients is the numerator of itself and will be returned as it is.
• When the option factor is set, the return value is a list [g,c]. Here, c is a rational number, g is an integral polynomial and poly = c*g holds.

[0] ptozp(2*x+5/3);
6*x+5
[1] nm(2*x+5/3);   
2*x+5/3

References

section nm, dn.

Go to the first, previous, next, last section, table of contents.