Geogebra预定义函数

http://wiki.geogebra.org/en/Predefined_Functions_and_Operators

Predefined Functions and Operators 

To create numbers, coordinates, or equations using the Input Bar you may also use the following pre-defined functions and operations. Logic operators and functions are listed in article about Boolean values.

Note: The predefined functions need to be entered using parentheses. You must not put a space between the function name and the parentheses.

Operation / FunctionInputℯ (Euler's number)Alt + eί (Imaginary unit)Alt + iπAlt + p or pi° (Degree symbol)Alt + oAddition+Subtraction-Multiplication* or Space keyScalar product* or Space keyVector product(see Points and Vectors)⊗Division/Exponentiation^ or superscript (x^2 or x2)Factorial!Parentheses( )x-coordinatex( )y-coordinatey( )Argumentarg( )Conjugateconjugate( )Absolute valueabs( )Signsgn( ) or sign()Square rootsqrt( )Cubic rootcbrt( )Random number between 0 and 1random( )Exponential functionexp( ) or ℯ^xLogarithm (natural, to base e)ln( ) or log( )Logarithm to base 2ld( )Logarithm to base 10lg( )Logarithm of x to base blog(b, x )Cosinecos( )Sinesin( )Tangenttan( )Secantsec()Cosecantcosec()Cotangentcot()Arc cosineacos( ) or arccos( )Arc sineasin( ) or arcsin( )Arc tangent (returns answer between -π/2 and π/2)atan( ) or arctan( )Arc tangent (returns answer between -π and π)atan2(y, x)Hyperbolic cosinecosh( )Hyperbolic sinesinh( )Hyperbolic tangenttanh( )Hyperbolic secantsech( )Hyperbolic cosecantcosech( )Hyperbolic cotangentcoth( )Antihyperbolic cosineacosh( ) or arccosh( )Antihyperbolic sineasinh( ) or arcsinh( )Antihyperbolic tangentatanh( ) or arctanh( )Greatest integer less than or equalfloor( )Least integer greater than or equalceil( )Roundround( )Beta function Β(a, b)beta(a, b)Incomplete beta function Β(x;a, b)beta(a, b, x)Incomplete regularized beta function I(x; a, b)betaRegularized(a, b, x)Gamma function Γ(x)gamma( x)(Lower) incomplete gamma function γ(a, x)gamma(a, x)(Lower) incomplete regularized gamma function P(a,x) = γ(a, x) / Γ(a)gammaRegularized(a, x)Gaussian Error Functionerf(x)Realreal( )Imaginaryimaginary( )Digamma functionpsi(x)The Polygamma function is the (m+1)th derivative of the natural logarithm of the Gamma function, gamma(x) (m=0,1)polygamma(m, x)The Sine Integral functionsinIntegral(x)The Cosine Integral functioncosIntegral(x)The Exponential Integral functionexpIntegral(x)The Reimann-Zeta function ζ(x)zeta(x)

Example:

Conjugate(17 + 3 * ί) gives -3 ί + 17, the conjugated complex number of 17 + 3 ί.

See Complex Numbers for details.

Categories: 

• Version 4.2
• Manual (official)