Variable

In the calculator, any data can be stored in a variable and hence can be used later. To assign a value to a variable, just input

Variable_Name = Value

The variable name can be any combination of small letters, capital letters, digit numbers, and underscore "_", except that the first letter can not be a digit number.

The following are some examples

Input	Output
a = 1.5
t_0 = 2.0
b = a * sin(t_0)
A = [1,2.5; 3, 4i]
[1+i, 1-i]*A
PI
E

Tips

Variable name is case sensitive.
Variable "PI" is pre-assigned as mathematical constant π, and its value can be overwritten by the user.
Variable "E" is pre-assigned as natural logarithm constant e, and its value can be overwritten by the user.

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