COMSOL中的函数表达.docVIP

Mathematical Functions Table 3-4: Mathematical Functions Function Description Syntax example abs Absolute value abs(x) acos Inverse cosine (in radians) acos(x) acosh Inverse hyperbolic cosine (in radians) acosh(x) acot Inverse cotangent (in radians) acot(x) acoth Inverse hyperbolic cotangent (in radians) acoth(x) acsc Inverse cosecant (in radians) acsc(x) acsch Inverse hyperbolic cosecant (in radians) acsch(x) arg Phase angle (in radians) arg(x) asec Inverse secant (in radians) asec(x) asech Inverse hyperbolic secant (in radians) asech(x) asin Inverse sine (in radians) asin(x) asinh Inverse hyperbolic sine (in radians) asinh(x) atan Inverse tangent (in radians) atan(x) atan2 Four-quadrant inverse tangent (in radians) atan2(y,x) atanh Inverse hyperbolic tangent (in radians) atanh(x) besselj Bessel function of the first kind besselj(a,x) bessely Bessel function of the second kind bessely(a,x) besseli Modified Bessel function of the first kind besseli(a,x) besselk Modified Bessel function of the second kind besselk(a,x) ceil Round up to nearest integer ceil(x) conj Complex conjugate conj(x) cos Cosine cos(x) cosh Hyperbolic cosine cosh(x) cot Cotangent cot(x) coth Hyperbolic cotangent coth(x) csc Cosecant csc(x) csch Hyperbolic cosecant csch(x) eps Floating point relative accuracy eps erf Error function erf(x) exp Exponential exp(x) floor Round down to nearest integer floor(x) gamma Gamma function gamma(x) i, j Imaginary unit i imag Imaginary part imag(u) inf Infinity inf log Natural logarithm log(x) log10 Common logarithm (base 10) log10(x) log2 Base-2 logarithm log2(x) max Maximum of two arguments max(a,b) min Minimum of two arguments min(a,b) mod Modulo operator mod(a,b) NaN, nan Not-a-number nan pi Pi pi psi Psi function and its derivatives psi(x,k) range Create a range of numbers range(a,step,b) real Real part real(u) round Round to closest integer round(x) sec Secant sec(x) sech Hyperbolic secant sech(x) sign