New Functions in 2013

Excel 2013 introduced 49 new worksheet functions.

ACOT	Returns the arc-cotangent of a number.
ACOTH	Returns the hyperbolic arc-cotangent of a number.
ARABIC	Returns the number converted from roman to arabic.
BASE	Returns the number converted into a text representation with the given base.
BINOM.DIST.RANGE	Returns the probability of a trial result using a binomial distribution.
BITAND	Returns the bitwise and of two numbers.
BITLSHIFT	Returns a number shifted left by a number of bits.
BITOR	Returns the bitwise or of two numbers.
BITRSHIFT	Returns a number shifted right by a number of bits.
BITXOR	Returns a bitwise exclusive or of two numbers.
CEILING.MATH	Returns a number rounded up to the nearest integer or to the nearest significant figure.
COMBINA	Returns the number of combinations with repetitions for a given number of items.
COT	Returns the hyperbolic cosine of a number.
COTH	Returns the cotangent of an angle.
CSC	Returns the cosecant of an angle.
CSCH	Returns the hyperbolic cosecant of an angle.
DAYS	Returns the number of days between two dates.
DECIMAL	Returns the decimal number of a text representation of a number in a given base.
ENCODEURL	Returns a url encoded string.
FILTERXML	Returns specific data from the XML content by using Xpath.
FLOOR.MATH	Returns a number rounded to the nearest integer in a given base into a decimal number.
FORMULATEXT	Returns the formula from a particular cell.
GAMMA	Returns the gamma function value.
GAUSS	Returns 0.5 less than the standard normal cumulative distribution.
IFNA	Returns the boolean value depending if the value is #N/A.
IMCOSH	Returns the hyperbolic cosine of a complex number.
IMCOT	Returns the cotangent of a complex number.
IMCSC	Returns the cosecant of a complex number.
IMCSCH	Returns the hyperbolic cosecant of a complex number.
IMSEC	Returns the secant of a complex number.
IMSECH	Returns the hyperbolic secant of a complex number.
IMSINH	Returns the hyperbolic sine of a complex number.
IMTAN	Returns the tangent of a complex number.
ISOWEEKNUM	Returns the number of the ISO week of the year for a given date.
MUNIT	Returns the unit matrix or the specified dimension.
NUMBERVALUE	Returns the text to number in a locale independent manner.
PDURATION	Returns the number of periods required by an investment to reach a specified value.
PERMUTATIONA	Returns the number of permutations for a subset of objects or events (with repetition).
PHI	Returns the value of the density function for a standard normal distribution.
RRI	Returns the equivalent interest rate for the growth of an investment.
SEC	Returns the secant of an angle.
SECH	Returns the hyperbolic secant of an angle.
SHEET	Returns the sheet number of the referenced sheet.
SHEETS	Returns the number of sheets in a reference.
SKEW.P	Returns the skewness of a distribution based on a population.
UNICHAR	Returns the unicode character that is references by the given numeric value.
UNICODE	Returns the number that corresponds to the first character of the text.
WEBSERVICE	Returns data from a webservice.
XOR	Returns the logical exclusive or for any number of arguments.

ACOT Returns the arc-cotangent of a number.
ACOTH Returns the hyperbolic arc-cotangent of a number.
ARABIC Returns the number converted from roman to arabic.
BASE Returns the number converted into a text representation with the given base.
BINOM.DIST.RANGE Returns the probability of a trial result using a binomial distribution.
BITAND Returns the bitwise and of two numbers.
BITLSHIFT Returns a number shifted left by a number of bits.
BITOR Returns the bitwise or of two numbers.
BITRSHIFT Returns a number shifted right by a number of bits.
BITXOR Returns a bitwise exclusive or of two numbers.
CEILING.MATH Returns a number rounded up to the nearest integer or to the nearest significant figure.
COMBINA Returns the number of combinations with repetitions for a given number of items.
COT Returns the hyperbolic cosine of a number.
COTH Returns the cotangent of an angle.
CSC Returns the cosecant of an angle.
CSCH Returns the hyperbolic cosecant of an angle.
DAYS Returns the number of days between two dates.
DECIMAL Returns the decimal number of a text representation of a number in a given base.
ENCODEURL Returns a url encoded string.
FILTERXML Returns specific data from the XML content by using Xpath.
FLOOR.MATH Returns a number rounded to the nearest integer in a given base into a decimal number.
FORMULATEXT Returns the formula from a particular cell.
GAMMA Returns the gamma function value.
GAUSS Returns 0.5 less than the standard normal cumulative distribution.
IFNA Returns the boolean value depending if the value is #N/A.
IMCOSH Returns the hyperbolic cosine of a complex number.
IMCOT Returns the cotangent of a complex number.
IMCSC Returns the cosecant of a complex number.
IMCSCH Returns the hyperbolic cosecant of a complex number.
IMSEC Returns the secant of a complex number.
IMSECH Returns the hyperbolic secant of a complex number.
IMSINH Returns the hyperbolic sine of a complex number.
IMTAN Returns the tangent of a complex number.
ISOWEEKNUM Returns the number of the ISO week of the year for a given date.
MUNIT Returns the unit matrix or the specified dimension.
NUMBERVALUE Returns the text to number in a locale independent manner.
PDURATION Returns the number of periods required by an investment to reach a specified value.
PERMUTATIONA Returns the number of permutations for a subset of objects or events (with repetition).
PHI Returns the value of the density function for a standard normal distribution.
RRI Returns the equivalent interest rate for the growth of an investment.
SEC Returns the secant of an angle.
SECH Returns the hyperbolic secant of an angle.
SHEET Returns the sheet number of the referenced sheet.
SHEETS Returns the number of sheets in a reference.
SKEW.P Returns the skewness of a distribution based on a population.
UNICHAR Returns the unicode character that is references by the given numeric value.
UNICODE Returns the number that corresponds to the first character of the text.
WEBSERVICE Returns data from a webservice.
XOR Returns the logical exclusive or for any number of arguments.