Complex Number and Quadratic Equations
is the following equation quadratic?x2+2x+11=0
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If n is any positive integer, then the value of 2i4n+1−i4n−1 equals :
Write [2(cos30o+isin30o)]2 in the form a + bi.
The value of the determinant ∣∣1+i1+ii1−ii1+ii1+i1−i∣∣
Find the multiplicative inverse of 23−21i.
If arg(z+a)=6π and arg(z−a)=32π;a∈R, then
Find the multiplicative inverse of the complex numbers given the following:4−3i
If z=23+i, then z69 is equal to
xn=cos2nπ+i sin2nπ then x1x2x3x4......x∞=