The value `1+i^2+i^(4)+......i^(20)` is

The value of i + i^(2) + i^(3) + i^(4) is ________

The value of 1+i+i^(2)+... + i^(n) is (i) positive (ii) negative (iii) 0 (iv) cannot be determined

Find the value of 1+i^(2)+i^(4)+i^(6)+...+i^(2n), where i=sqrt(-1) and n in N.

5.The value of (i^(4x+1)-i^(4x-1))/(2) is equal to (a) 1 (b) -1 (c) -i (d) 0

Find the value of i^(4) + i^(5) + i^(6) + i^(7) .

The value of i^2 + i^4 + i^6 + i^8.... upto (2n+1) terms , where i^2 = -1, is equal to:

The value of (1+i)^4+(1-i)^4 is

Evaluate 1+i^2+i^4+i^6+...+i^(2n)dot

Find the value of 1+i^2+i^4+i^6++i^(2n)

The value of |(i^m,i^(m+1),i^(m+2)),(i^(m+5),i^(m+4),i^(m+3)),(i^(m+6),i^(m+7),i^(m+8))| , when i=sqrt-1 , is