Do operation as per given string
Example: '3*5' then answer must be 15;
'3+5' then answer must be 8;
'35' then answer must be 35;
pressure to dB?
vectorization in N
Remove white space from the string
Do Fast Fourier Transformation
Append two matrix as shown below example
Change the first and last diagonal element of the identity matrix to zero
Check that number is whole number
Convert number from given base to other base
Find out phase angle of second order system.
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