1
WB JEE 2010
+1
-0.25

The roots of the quadratic equation $${x^2} - 2\sqrt 3 x - 22 = 0$$ are

A
imaginary
B
real, rational and equal
C
real, irrational and unequal
D
real, rational and unequal
2
WB JEE 2010
+1
-0.25

The quadratic equation $${x^2} + 15|x| + 14 = 0$$ has

A
only positive solutions
B
only negative solutions
C
no solution
D
both positive and negative solution
3
WB JEE 2011
+1
-0.25

If sin $$\theta$$ and cos $$\theta$$ are the roots of equation ax2 $$-$$ bx + c = 0, then a, b and c satisfy the relation

A
a2 + b2 + 2ac = 0
B
a2 $$-$$ b2 + 2ac = 0
C
a2 + c2 + 2ab = 0
D
a2 $$-$$ b2 $$-$$ 2ac = 0
4
WB JEE 2011
+1
-0.25

Let a, b, c be three real numbers such that a + 2b + 4c = 0. Then the equation ax2 + bx + c = 0

A
has both the roots complex
B
has its roots lying within $$-$$1 < x < 0
C
has one of the roots equal to $${1 \over 2}$$
D
has its roots lying within 2 < x < 6
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
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