HP 39gs Graphing Calculus functions, Nthroot 8 returns, ∂ s1s1 2+3*s1 returns 2*s1+3, S1,2*X+3,X

n

Takes the nth root of x.

root NTHROOT value

Example

3 NTHROOT 8 returns 2

Calculus functions

The symbols for differentiation and integration are

available directly form the keyboard— and S respectively—as well as from the MATH menu.

∂	Differentiates expression with respect to the variable of
	differentiation. From the command line, use a formal
	name (S1, etc.) for a non-numeric result. See “Finding
	derivatives” on page 13-21.
	∂ variable(expression)
	Example
	∂ s1(s12+3*s1) returns 2*s1+3
∫	Integrates expression from lower to upper limits with
	respect to the variable of integration. To find the definite
	integral, both limits must have numeric values (that is, be
	numbers or real variables). To find the indefinite integral,
	one of the limits must be a formal variable (s1, etc).
	∫ (lower, upper, expression, variable)
	See “Using formal variables” on page 13-20 for
	further details.
	Example
	∫ (0,s1,2*X+3,X)
	finds the indefinite result 3*s1+2*(s1^2/2)
	See “To find the indefinite integral using formal
	variables” on page 13-23 for more information on
	finding indefinite integrals.

13-6 Using mathematical functions