1.Square root
B = sqrt(X) returns the square root of each element of the array X. For the elements of X that are negative or complex, sqrt(X) produces complex results.
>> X=4;
>> B=sqrt(X)
B =
2
>> Y=4+9i
Y =
4.0000 + 9.0000i
>> C=sqrt(Y)
C =
2.6314 + 1.7101i
>> Z=-4;
>> D=sqrt(Z)
D =
0 + 2.0000i
y = nthroot(X, n) returns the real nth root of the elements of X. Both X and n must be real and n must be a scalar. If X has negative entries, n must be an odd integer.
>> Y=nthroot(8,3)
Y =
2
>> Y=nthroot(64,3)
Y =
4
>> Y=nthroot(-8,3)
Y =
-2
>> Y=nthroot(-64,3)
Y =
-4