If `A !=A^2+I` then `|I+A|=`

If I_(n)= int cot^(n)x dx" then " I_(0)+I_(1)+2(I_(2)+I_(3))+I_(4)+I_(5)=

If 1 is the incentre and I_1,I_2,I_3 are the centre of escribed circles of the triangleABC . Prove that II_(1)^(2)+I_2I_(3)^(2)= II_(2)^(2)+I_(3)I_(1)^(2)= I_(1)I_(2)^(2)+II_(3)^(2)

Express (1- 2i)/(2+i) + (3+i)/(2-i) in the form a + bi

If A=[(1+2i,i),(-I,1-2i)] , where i=sqrt(-1) , then A(adjA)= . . .

Plot the points corresponding to 2-3i, 2+3i, 3-2i, 3+2i, -3+2i" and "-3-2i on the same Argand plane.

If z+sqrt(2)|z+1|+i=0 , then z= (A) 2+i (B) 2-i (C) -2-i (D) -2+i

If z+sqrt(2)|z+1|+i=0 , then z= (A) 2+i (B) 2-i (C) -2-i (D) -2+i

Find the value of | [ 2 + i , 2 - i ] , [ 1 + i , 1 - i ] | is