In ABC, the sides BC=5,CA=4,AB=3. If A(0,0) and the internal bisector of angle A meets BC in D(12/7,12/7) then incentre of ?ABC is

1.  (2,2)

2.  (3,2)

3.  (2,3)

4.  (1,1)

4
Correct Answer :

(1,1)

Explanation :
No Explanation available for this question

If f: {(1, 2), (2, 3), (3, 1)}, then fof=

1.  φ

2.  2f

3.  {(1, 3), (2, 1), (3, 2)}

4.  {(1, 1), (2, 2), (3, 3)}

4
Correct Answer :

{(1, 3), (2, 1), (3, 2)}

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  ∞

4.  -∞

4
Correct Answer :

-∞

Explanation :
No Explanation available for this question

If f={(1, a), (2, b), (1, b), (3, c), (1, c)}, g=={(a, p), (a, q), (b, r), (c, q), (c, p)},then (gof)-1=

1.  {(p, 1), (q, 1), (r, 2), (r, 1), (q, 3), (p, 3)}

2.  {(1, p), (1, q), (2, r), (1, r), (3, q), (3, p)}

3.  {(p, 1), (1, q), (r, 2), (1, r), (q, 3), (3, p)}

4.  {(1, p), (q, 1), (2, r), (r, 1), (3, q), (p, 3)}

4
Correct Answer :

{(p, 1), (q, 1), (r, 2), (r, 1), (q, 3), (p, 3)}

Explanation :
No Explanation available for this question

The perpendicular from the origin to the line joining the points A(acosα,asinα) and B(asinβ,acosβ) divides AB in the ratio

1.  1:2

2.  2:1

3.  2:3

4.  1:1

4
Correct Answer :

1:1

Explanation :
No Explanation available for this question

If f(x)=2x-1, g(x)=x2, then (3f-2g)(x)=

1.  5x-x2+9

2.  6x-5x2-4

3.  2x-x2-3

4.  6x-2x2-3

4
Correct Answer :

6x-2x2-3

Explanation :
No Explanation available for this question

The foot of the perpendicular from origin on the line joining (3,-4), (-4,3) is

1.  (1,1)

2.  (-1,-1)

3.  (1/2, 1/2)

4.  (-1/2,-1/2)

4
Correct Answer :

(-1/2,-1/2)

Explanation :
No Explanation available for this question

If f(x)=x2, g(x)=x2-5x+6 then g(2)+g(3)+g(0)/f(0)+f(1)+f(-2)=

1.  2

2.  1

3.  5/6

4.   6/5

4
Correct Answer :

6/5

Explanation :
No Explanation available for this question

In a triangle ABC, if a is the arithmetic mean and b, c (b≠c) are two geometric means between any two positive real numbers then =

1.  0

2.  1

3.  2

4.  4

4
Correct Answer :

2

Explanation :
No Explanation available for this question

1.  20/3

2.  3/2

3.

4.  8/9

4
Correct Answer :

Explanation :
No Explanation available for this question

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