ApasScript.

Calculus

limit

The exact limit of an expression as a variable approaches a point. Gives a value, inf or -inf, divergent (the one-sided limits differ), or unsupported when gtmath cannot decide -- never a numeric guess.

taylor

The Taylor polynomial of an expression about a point, through the given order (at most 32). Only the truncated polynomial -- no claim about the remainder.

defint

The exact definite integral between two bounds; a bound may be inf or -inf, a multiple of pi (defint(sin(x)^2, x, 0, 2*pi) = pi) or a symbol (defint(x^2, x, 0, a) = a^3/3). Returns unsupported (rather than a guess) when gtmath cannot prove the result, for example across a pole.

limitInf

The exact limit of a polynomial or rational expression as the variable goes to inf (default) or -inf.

laurentLead

The leading term of the Laurent expansion of a rational expression at a pole.

principalPart

The principal part (all negative-power terms) of a rational expression's Laurent expansion at a pole.

signedArea

The signed area between a curve and the axis over an interval (area below the axis counts negative).

areaBetween

The signed area between an upper and a lower curve over an interval.

absAreaBetween

The total (unsigned) area between two polynomial curves, splitting the interval where they cross.

arcLength

The exact arc length of y = f(x) over an interval, when the integral is one gtmath can do exactly.

lineIntegral

The line integral of a scalar field along a parameterized curve (with respect to arc length).

vectorLineIntegral

The line integral (work) of a vector field along a parameterized curve: the integral of F . dr.

fluxIntegral

The flux of a vector field through a parameterized surface r(u, v), oriented by r_u x r_v.

surfaceArea

The area of a parameterized surface r(u, v) over a parameter rectangle.

volumeIntegral

The integral of a scalar field over a parameterized volume; orientation says whether the Jacobian is "nonnegative" or "nonpositive".

criticalPoints

The stationary points of a polynomial, each with its multiplicity and whether it is a local minimum, maximum or degenerate. Roots gtmath cannot find exactly are reported as an unresolved factor.

curveAnalysis

Where a polynomial is increasing/decreasing and concave up/down, as intervals.

extrema

The absolute minimum and maximum of a polynomial on a closed interval, with where they occur.

tangentLine

The tangent line to y = p(x) at a point, for a polynomial p.

normalLine

The normal line to y = p(x) at a point, for a polynomial p (a vertical line when the tangent is horizontal).

linearApprox

The linear approximation of a polynomial at a point.

implicitDiff

dy/dx for a relation F(x, y) = 0, by implicit differentiation.

substAll

Substitutes several variables at once: substAll(e, [x, y], [1, t]).