# The minimum value of quadratic expression x2+2bx+c is:

1.  cb2

2.  c2b

3.  c+b2

4.  c-b2

4

c-b<sup>2</sup>

Explanation :
No Explanation available for this question

# Sum of the series 1+[k/3]+[(k(k+1)/3.6)]+[([(k(k+1)(k+2)/3.6.9)]+....is equal to

1.  (2/3)k

2.  (3/2)k

3.  (2/3)

4.  (3/2)

4

(3/2)k

Explanation :
No Explanation available for this question

1.  f(-x)

2.  f(x)

3.  -f(x)

4.  -f(-x)

4

f(-x)

Explanation :
No Explanation available for this question

# If a, b, c are distinct and

1.  a+b+c=1

2.  ab+bc+ca=0

3.  a+b+c=0

4.  abc=0

4

abc=0

Explanation :
No Explanation available for this question

# If the system of equations x+y+z=6, x+2y+λz=0, x+2y+3z=10 has no solution, then λ=

1.  2

2.  3

3.  4

4.  5

4

3

Explanation :
No Explanation available for this question

# from a group with matrix multiplication as the binary operation, the identity element in it is:

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# If tan 350=K, Then the value of (tan 1450- tan 1250) /(1 + tan 1450tan1250) =

1.  2K(1-k2)

2.  2K/(1+k2)

3.  (1-K2)/2K

4.  (1-K2)/(1+K2)

4

(1-K2)/2K

Explanation :
No Explanation available for this question

# If x = a(secθ+tanθ)2, y = b(secθ-tanθ)4, then x4y2 =

1.  absecθ

2.  a2b2+tan2θ

3.  a2b4

4.  a4b2

4

a<sup>2</sup>b<sup>4</sup>

Explanation :
No Explanation available for this question

# The period of the function tan(3x+5) is:

1.  2π/3

2.  π/6

3.  π/3

4.  π

4

&#960;/3

Explanation :
No Explanation available for this question

1.  cosθ

2.  sinθ

3.  -cosθ

4.  -sinθ

4