Returns the definite integral of f with respect to x
evaluated from "a" to b.
The argument list can be extended for multiple integrals.
For example, defint(f,x,a,b,y,c,d).
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Factors polynomial p of x.
The x can be omitted for polynomials in x.
The polynomial should be factorable over integers.
The argument list can be extended for multivariate polynomials.
For example, factor(p,x,y) factors p over x and then over y.
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Returns all of the roots, both real and complex,
of polynomial p in x.
The roots are computed numerically.
The coefficients of p can be real or complex.
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Returns the quotient of polynomial p(x) over q(x).
The last argument can be omitted for polynomials in x.
The remainder can be calculated by p-q*quotient(p,q).
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If "a" is true then b is returned
else if c is true then d is returned, etc.
If the number of arguments is odd then the last argument is returned
when all else fails.
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Returns the transpose of "a" with respect to indices i and j.
If i and j are omitted then 1 and 2 are used.
Hence a matrix can be transposed with a single argument.
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