### Alphabetical - I

IF | The value based on a logical test that is either True or False. |

IFERROR | The value or something else if it evaluates to an error. |

IFNA | (2013) The value True or False depending if the value is #N/A. |

IFS | (2019) The value based on multiple True or False conditions. |

IMABS | The absolute value of a complex number. |

IMAGINARY | The imaginary coefficient of a complex number. |

IMARGUMENT | The theta argument in radians. |

IMCONJUGATE | The complex conjugate of a complex number. |

IMCOS | The cosine of a complex number. |

IMCOSH | (2013) The hyperbolic cosine of a complex number. |

IMCOT | (2013) The cotangent of a complex number. |

IMCSC | (2013) The cosecant of a complex number. |

IMCSCH | (2013) The hyperbolic cosecant of a complex number. |

IMDIV | The quotient of two complex numbers. |

IMEXP | The exponential of a complex number. |

IMLN | The natural logarithm of a complex number. |

IMLOG10 | The base-10 logarithm of a complex number. |

IMLOG2 | The base-2 logarithm of a complex number. |

IMPOWER | The complex number raised to an integer number. |

IMPRODUCT | The product of two or more complex numbers. |

IMREAL | The real coefficient of a complex number. |

IMSEC | (2013) The secant of a complex number. |

IMSECH | (2013) The hyperbolic secant of a complex number. |

IMSIN | The sine of a complex number. |

IMSINH | (2013) The hyperbolic sine of a complex number. |

IMSQRT | The square root of a complex number. |

IMSUB | The difference of two complex numbers. |

IMSUM | The sum of two or more complex numbers. |

IMTAN | (2013) The tangent of a complex number. |

INDEX | The value from a cell range which is the intersection of a row AND a column. |

INDIRECT | The text string of the contents of a given cell reference. |

INFO | The text string returning useful information about the environment. |

INT | The number rounded down to the nearest integer. |

INTERCEPT | The intersection with the y-axis using a linear regression plotted through known values. |

INTRATE | The interest rate for a security held to maturity. |

IPMT | The interest paid for a given period in a series of equal cash flows at regular intervals. |

IRR | The interest rate for a series of unequal cash flows at regular intervals (implicit reinvestment rate). |

ISBLANK | The value True or False depending if the value is blank. |

ISERR | The value True or False depending if the value is an error (not #N/A). |

ISERROR | The value True or False depending if the value is an error. |

ISEVEN | The value True or False depending if the value is an even number. |

ISFORMULA | (2013) The value True or False depending if the cell contains a formula. |

ISLOGICAL | The value True or False depending if the value is True or False. |

ISNA | The value True or False depending if the value is #N/A. |

ISNONTEXT | The value True or False depending if the value is non text. |

ISNUMBER | The value True or False depending if the value is a number. |

ISO.CEILING | (CELING.MATH) The number rounded up to the nearest integer or significant figure (renamed). |

ISODD | The value True or False depending if the value is an odd number. |

ISOWEEKNUM | (2013) The number of the ISO week of the year for a given date. |

ISPMT | (IPMT) The interest paid for a given period in a series of equal cash flows at regular intervals (incorrectly). |

ISREF | The value True or False depending if the value is a cell reference. |

ISTEXT | The value True or False depending if the value is text. |

IFThe value based on a logical test that is either True or False. |

IFERRORThe value or something else if it evaluates to an error. |

IFNA(2013) The value True or False depending if the value is #N/A. |

IFS(2019) The value based on multiple True or False conditions. |

IMABSThe absolute value of a complex number. |

IMAGINARYThe imaginary coefficient of a complex number. |

IMARGUMENTThe theta argument in radians. |

IMCONJUGATEThe complex conjugate of a complex number. |

IMCOSThe cosine of a complex number. |

IMCOSH(2013) The hyperbolic cosine of a complex number. |

IMCOT(2013) The cotangent of a complex number. |

IMCSC(2013) The cosecant of a complex number. |

IMCSCH(2013) The hyperbolic cosecant of a complex number. |

IMDIVThe quotient of two complex numbers. |

IMEXPThe exponential of a complex number. |

IMLNThe natural logarithm of a complex number. |

IMLOG10The base-10 logarithm of a complex number. |

IMLOG2The base-2 logarithm of a complex number. |

IMPOWERThe complex number raised to an integer number. |

IMPRODUCTThe product of two or more complex numbers. |

IMREALThe real coefficient of a complex number. |

IMSEC(2013) The secant of a complex number. |

IMSECH(2013) The hyperbolic secant of a complex number. |

IMSINThe sine of a complex number. |

IMSINH(2013) The hyperbolic sine of a complex number. |

IMSQRTThe square root of a complex number. |

IMSUBThe difference of two complex numbers. |

IMSUMThe sum of two or more complex numbers. |

IMTAN(2013) The tangent of a complex number. |

INDEXThe value from a cell range which is the intersection of a row AND a column. |

INDIRECTThe text string of the contents of a given cell reference. |

INFOThe text string returning useful information about the environment. |

INTThe number rounded down to the nearest integer. |

INTERCEPTThe intersection with the y-axis using a linear regression plotted through known values. |

INTRATEThe interest rate for a security held to maturity. |

IPMTThe interest paid for a given period in a series of equal cash flows at regular intervals. |

IRRThe interest rate for a series of unequal cash flows at regular intervals (implicit reinvestment rate). |

ISBLANKThe value True or False depending if the value is blank. |

ISERRThe value True or False depending if the value is an error (not #N/A). |

ISERRORThe value True or False depending if the value is an error. |

ISEVENThe value True or False depending if the value is an even number. |

ISFORMULA(2013) The value True or False depending if the cell contains a formula. |

ISLOGICALThe value True or False depending if the value is True or False. |

ISNAThe value True or False depending if the value is #N/A. |

ISNONTEXTThe value True or False depending if the value is non text. |

ISNUMBERThe value True or False depending if the value is a number. |

ISO.CEILING(CELING.MATH) The number rounded up to the nearest integer or significant figure (renamed). |

ISODDThe value True or False depending if the value is an odd number. |

ISOWEEKNUM(2013) The number of the ISO week of the year for a given date. |

ISPMT(IPMT) The interest paid for a given period in a series of equal cash flows at regular intervals (incorrectly). |

ISREFThe value True or False depending if the value is a cell reference. |

ISTEXTThe value True or False depending if the value is text. |

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