Bash if else Statement | tips for using Bash arithmetic operators | roots and trigonometric function

Bash if else Statement, Bash arithmetic operators are used to perform arithmetic operations on numbers. Bash supports the following arithmetic operators:
Addition (+)
Subtraction (-)
Multiplication (*)
Division (/)
Modulo (%)
Exponentiation (**)
To perform an arithmetic operation using Bash arithmetic operators, you simply enclose the expression in parentheses. For example, to add 1 and 2, you would use the following expression:
Bash
(1 + 2)
Use code with caution. Learn more
This expression will be evaluated to 3.
You can also use Bash arithmetic operators to assign values to variables. For example, the following command assigns the value of 1 + 2 to the variable result:
Bash
result=$((1 + 2))
Use code with caution. Learn more
The result variable will now contain the value 3.

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