Mathematics questions
18011 published questions with worked solutions.
- The value of expression 2(1+ ) (1+ ^2 )+3(2+ ) (2+ ^2 )+4(3+ ) (3+ ^2 )+ +(n+1)(n+ ) (n+ ^2 ), where is an imaginary cube root of...
- If A,B,C are three points in the Argand plane representing the complex numbers z_1,z_2,z_3 such that z_1= z_2+z_3 +1 , where R,...
- The roots of the cubic equation (z+ )^3= ^3, 0
- The value of [ 2 (56^ 15')+i (56^ 15') ]^8 is
- If z_1,z_2,z_3,z_4 represent the vertices of a rhombus taken in the anticlockwise order, then
- If Im ( 2z+1 iz+1 )=-2, then locus of z is
- If +i = ^ -1 (z), z=x+iy and is constant, the locus of z' is
- For any complex number z, the minimum value of |z|+|z-2i|, is
- If z is a non-real 7^ th root of -1, then z^ 86 +z^ 175 +z^ 289 is equal to
- If the points z_1,z_2,z_3 are the vertices of an equilateral triangle in the Argand plane, then which one of the following is not...
- Number of non-zero integral solutions of the equation (1-i)^n=2^n is
- If z ( z+ )+ z(z+ )=0 where is a complex constant, then z is represented by a point on
- Let z_1,z_2 be two complex numbers such that z_1+z_2 and z_1z_2 both are real, then
- The points representing cube roots of unity
- If the roots of (z-1)^n=i(z+1)^n are plotted in the Argand plane, they are
- If _0, _1, _2, , _ n-1 be the n^ th roots of unity, then the value of _ i=0 ^ n-1 _i 3- _i is equal to
- The locus of point z satisfying Re (z^2 )=0, is
- If z lies on the circle |z-1|=1, then z-2 z is
- If z_1,z_2 and z_3,z_4 are two pairs of conjugate complex numbers, then ( z_1 z_4 )+ ( z_2 z_3 ) equals
- If az_1+bz_2+cz_3=0 for complex numbers z_1,z_2,z_3 and real numbers a,b,c, then z_1,z_2,z_3 lie on a