# If the solution of represents a circle, then the value of ‘a’ is

1.  2

2.  -2

3.  3

4.  -4

4

-2

Explanation :
No Explanation available for this question

# The solution of

1.  1+y2=cx

2.  1-y2=cx

3.  1+x2=cy

4.  1-x2=cy

4

1+y2=cx

Explanation :
No Explanation available for this question

# Assertion(A):The pair of lines ax2+2hxy+by2+2g1x+2f1y+c1=0 ,is parallel to the pair of lines ax2+2hxy+by2+2g2x+2f2y+c2=

1.  A and R are true and R is the correct explanation of A

2.  A and R are true and R is not the correct explanation of A

3.  A is true,R is false

4.  R is true, A is false

4

A and R are true and R is not the correct explanation of A

Explanation :
No Explanation available for this question

# When the straight line x+2y=1 cuts the circlex2+y2=4 at P,Q the equation of pair of lines OP,OQ is given as Ax2+2Hxy+By2=0,then the decreasing sequence of A,B,H is(A>0)

1.  H,B,A

2.  B,H,A

3.  A,H,B

4.  A,B,H

4

B,H,A

Explanation :
No Explanation available for this question

# To evaluatewith usual notation,which of the following is /are not correct

1.  Only I

2.  Only II

3.  both I and II

4.  neither I nor II

4

Only II

Explanation :
No Explanation available for this question

# Correct match the following is

1.  A→t;B→q;C→r;D→p

2.  A→s;B→p;C→r;D→q

3.  A→s;B→p;C→t;D→q

4.  A→s;B→p;C→r;D→t

4

A→s;B→p;C→r;D→t

Explanation :
No Explanation available for this question

# In the expansion of (x+a)n, sum of the odd terms is p and the sum of the even terms is Q, then 4PQ=

1.  (x2-a2)n

2.  (x+a)2n+(x-a)2n

3.  (x+a)2n-(x-a)2n

4.  (x-a)2n-(x+a)2n

4

(x+a)2n-(x-a)2n

Explanation :
No Explanation available for this question

# If x is very small, so that x4 and higher powers of x are neglected then √(x2+16)-√(x2+9)=

1.  1+(x2/24)

2.  1-(x2/24)

3.  1+(x2/48)

4.  1-(x2/48)

4

1-(x2/24)

Explanation :
No Explanation available for this question

# If z=(1/3)+(1.3//3.6)+(1.3.5/3.6.9)+-------∞,then

1.  Z2-2z+2

2.  Z2-2z-2=0

3.  Z2+2z-2=0

4.  Z2+2z+2=0

4

Z2+2z-2=0

Explanation :
No Explanation available for this question

1.  5x3/72

2.  –(5x3/72)

3.  5x3/432

4.  –(5x3/432)

4