1.  0

2.  ∞

3.  -∞

4.  1

4

1

Explanation :
No Explanation available for this question

# f: R+→R defined by f(x)=2x, x(0, 1), f(x)=3x, x?[1, ∞) is

1.  onto

2.  one-one

3.  not one-one

4.  a bijection

4

one-one

Explanation :
No Explanation available for this question

# In a triangle ABC, if cot A = (x3+x2+x)1/2, cot B= (x+x-1+1)1/2 and cot C= (x-3+x-2+x-1) -1/2 then the triangle is

1.  isosceles

2.  obtuse angled

3.  right angled

4.  none

4

right angled

Explanation :
No Explanation available for this question

# If f(x)=|x-1|+|x-2|+|x-3| when 2

1.  one-one function only

2.  an onto function only

3.  an identify function

4.  an into function only

4

an identify function

Explanation :
No Explanation available for this question

# f: R→R defined by f(x)=e|x| is

1.  one-one onto

2.  one-one

3.  onto

4.  mapping

4

mapping

Explanation :
No Explanation available for this question

# f(x)=2|x|/ sinx is

1.  even

2.  odd

3.  neither even nor odd

4.  one-one on R –{x/sin x=0}

4

odd

Explanation :
No Explanation available for this question

# The radius of the circumcircle of an isosceles triangle PQR is equal to PQ(= PR), then the angle P is

1.  π/6

2.  π/3

3.  π/2

4.  2π/3

4

2π/3

Explanation :
No Explanation available for this question

# x(ax+1/ax-1)

1.  is an even function

2.  is an odd function

3.  is neither even nor odd

4.  none

4

is an even function

Explanation :
No Explanation available for this question

# if f(x)=a2x-a-2x/a2x+a-2x, then f(x) is

1.  even

2.  odd

3.  none of these

4.  cannot be determined

4

odd

Explanation :
No Explanation available for this question

1.  1

2.

3.

4.

4