# The value of tan 150+ tan 300+ tan 150 tan 300 is

1.  √2

2.  0

3.  -1

4.  1

4

1

Explanation :
No Explanation available for this question

# The maxima and minima of the function 2x3-15x2-36x+18 are

1.  (1, 37), (6, 306)

2.  (-1, -37), (-6, -306)

3.  (1, -37), (-6, 306)

4.  (-1, 37), (6, -306)

4

(-1, 37), (6, -306)

Explanation :
No Explanation available for this question

1.  e/2-1

2.  e-3/2

3.  e/2

4.  e-1/2

4

e/2-1

Explanation :
No Explanation available for this question

1.  8/15

2.  2/15

3.  4/15

4.  2/5

4

4/15

Explanation :
No Explanation available for this question

# If a, b, c, d are positive real numbers then =

1.  e (c + d)/(a + b)

2.  e d/b

3.  e c/a

4.  e

4

e d/b

Explanation :
No Explanation available for this question

# If x = a cos3 θ, y = a sin3 θ,thenis equal to:

1.  tan2 θ

2.  sec2 θ

3.  secθ

4.  |secθ|

4

secθ

Explanation :
No Explanation available for this question

# In the set Q of all positive rationals f: Q→ Q and is defined by f(x)= 2x+3, x ε Q. Formula that define the inverse function f--1 is:

1.  f--1: Q → Q

2.  f--1: Q → f

3.  f--1: f → Q

4.  none of these

4

f--1: Q → Q

Explanation :
No Explanation available for this question

# Matrix A is such that A2 = 2A - I, where I the unit matrix. Then for n ≥ 2, An =

1.  nA - (n - 1)I

2.  nA - 1

3.  2n-1 A - (n - 1)I

4.  2n - 1 A - I

4

nA - (n - 1)I

Explanation :
No Explanation available for this question

1.  π / 2

2.  π / 3

3.  π / 4

4.  π /4 or -3π/4

4

π / 4

Explanation :
No Explanation available for this question

1.  144

2.  12

3.  24

4.  64

4