" 2."5i^(11)+6i^(7)-9i^(9)

The value of (i^(5)+i^(6)+i^(7)+i^(8)+i^(9))/(1+i) is (1)/(2)(1+i)(b)(1)/(2)(1-i)(c)1(d)(1)/(2)

Show that 6i^(50)+5i^(17)-i^(11)+6i^(28) is an imaginary number.

Show that 6i^(50)+5i^(17)-i^(11)+6i^(28) is an imaginary number.

Find the value of (i^(6)+i^(7)+i^(8)+i^(9))/(i^(2)+i^(3))

6i^(50) + 5i^(33) - 2i^(15) + 6i^(48) = 7i .

Write the following in the form x+iy: (i) i+i^(2)+i^(3)+i^(4) (ii) i^(4)+i^(8)+i^(12)+i^(16) (iii) i+i^(5)+i^(9)+i^(13) (iv) i^(9)+i^(10)+i^(11)+i^(12) .

Show that ((19- 7i)/(9 + i))^(12) + ((20 - 5i)/(7 - 6i))^(12) is real.

The value of (i^5+i^6+i^7+i^8+i^9)/(1+i) is

The value of (i^5+i^6+i^7+i^8+i^9)(1+i) is: