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Mathematica > Core Language > Defining Variables and Functions > Assignments >

Built-in Mathematica Symbol

TimesBy (*=)

x*=c
multiplies x by c and returns the new value of x.

Multiply by a numerical value:

Multiply by a symbolic value:

Multiply all values in a list by a scalar:

Multiply all values in a list by another list:

Find the first power of two above one million:

TimesBy is a short form of this assignment:

DivideBy is closely related:

A variable to be multiplied must have an initial value: