MATLAB Function Reference

Elementary Math

Trigonometric

 acos Inverse cosine acosh Inverse hyperbolic cosine acot Inverse cotangent acoth Inverse hyperbolic cotangent acsc Inverse cosecant acsch Inverse hyperbolic cosecant asec Inverse secant asech Inverse hyperbolic secant asin Inverse sine asinh Inverse hyperbolic sine atan Inverse tangent atanh Inverse hyperbolic tangent atan2 Four-quadrant inverse tangent cos Cosine cosh Hyperbolic cosine cot Cotangent coth Hyperbolic cotangent csc Cosecant csch Hyperbolic cosecant sec Secant sech Hyperbolic secant sin Sine sinh Hyperbolic sine tan Tangent tanh Hyperbolic tangent

Exponential

 exp Exponential log Natural logarithm log2 Base 2 logarithm and dissect floating-point numbers into exponent and mantissa log10 Common (base 10) logarithm nextpow2 Next higher power of 2 pow2 Base 2 power and scale floating-point number reallog Natural logarithm for nonnegative real arrays realpow Array power for real-only output realsqrt Square root for nonnegative real arrays sqrt Square root

Complex

 abs Absolute value angle Phase angle complex Construct complex data from real and imaginary parts conj Complex conjugate cplxpair Sort numbers into complex conjugate pairs i Imaginary unit imag Complex imaginary part isreal True for real array j Imaginary unit real Complex real part unwrap Unwrap phase angle

Rounding and Remainder

 fix Round towards zero floor Round towards minus infinity ceil Round towards plus infinity round Round towards nearest integer mod Modulus after division rem Remainder after division sign Signum

Discrete Math (e.g., Prime Factors)

 factor Prime factors factorial Factorial function gcd Greatest common divisor isprime True for prime numbers lcm Least common multiple nchoosek All combinations of N elements taken K at a time perms All possible permutations primes Generate list of prime numbers rat, rats Rational fraction approximation

 Linear Algebra Data Analysis and Fourier Transforms