If a, b, c and d ∈ R such that a2 + b2 = 4 and and if (a + ib) = (c + id)2 (x + iy), then x2 + y2 is equal to
4
3
2
1
an onto function but not one-one
one-one function but not onto
a bijection
neither one-one nor onto
If x = a is a root of multiplicity two of a polynomial equation f(x) = 0, then
f'(a) = f''(a) = 0
f''(a) = f(a) = 0
Let A = {- 4, - 2, - 1, 0, 3, 5} and f : A IR be defined by
A.
The equation of the circle whose diameter is the common chord of the circles x2 + y2 + 2x + 2y + 1 = 0 and x2 + y2 + 4x + 6 y + 4 = 0 is