|
426 |
is equal to a) 2 b) –2 c)  d) 
is equal to a) 2 b) –2 c)  d) 
|
IIT 1999 |
03:25 min
|
|
427 |
Let and u is a unit vector then the maximum value of is a)  b)  c)  d) 
Let and u is a unit vector then the maximum value of is a)  b)  c)  d) 
|
IIT 2003 |
02:32 min
|
|
428 |
Given both θ and Ф are acute angles and sinθ = , cos Ф = then the value of θ + Ф belongs to a)  b)  c)  d) 
Given both θ and Ф are acute angles and sinθ = , cos Ф = then the value of θ + Ф belongs to a)  b)  c)  d) 
|
IIT 2004 |
02:15 min
|
|
429 |
Let x be the Arithmetic Mean and y, z be two Geometric Means between any two positive numbers then 
Let x be the Arithmetic Mean and y, z be two Geometric Means between any two positive numbers then 
|
IIT 1997 |
02:27 min
|
|
430 |
The value of the integral a)  b)  c) 3 d) 5
The value of the integral a)  b)  c) 3 d) 5
|
IIT 2000 |
06:09 min
|
|
431 |
Let . A vector in the plane of a and b whose projection on c is is a)  b) 3 c)  d) 
Let . A vector in the plane of a and b whose projection on c is is a)  b) 3 c)  d) 
|
IIT 2006 |
03:33 min
|
|
432 |
If and α, β lie between 0 and find a)  b)  c)  d) 2
If and α, β lie between 0 and find a)  b)  c)  d) 2
|
IIT 1979 |
03:00 min
|
|
433 |
The product of n positive real numbers is unity. Then their sum is a) A positive integer b) Divisible by n c) Equal to  d) Never less than n
The product of n positive real numbers is unity. Then their sum is a) A positive integer b) Divisible by n c) Equal to  d) Never less than n
|
IIT 1991 |
00:53 min
|
|
434 |
If and , then find
|
IIT 1982 |
01:40 min
|
|
435 |
The integral equals a)  b)  c) 1 d) 
The integral equals a)  b)  c) 1 d) 
|
IIT 2002 |
03:16 min
|
|
436 |
The inequality |z – 4| < |z – 2| represents the region given by a) Re(z) ≥ 0 b) Re(z) < 0 c) Re(z) > 0 d) None of these
The inequality |z – 4| < |z – 2| represents the region given by a) Re(z) ≥ 0 b) Re(z) < 0 c) Re(z) > 0 d) None of these
|
IIT 1982 |
01:58 min
|
|
437 |
 a) True b) False
 a) True b) False
|
IIT 1988 |
03:38 min
|
|
438 |
Coefficient of t24 in (1 + t2)12 (1 + t12) (1 + t24) is a)  b)  c)  d) 
Coefficient of t24 in (1 + t2)12 (1 + t12) (1 + t24) is a)  b)  c)  d) 
|
IIT 2003 |
03:19 min
|
|
439 |
If f (x) = |x – 2| and g (x) = then for x > 20 a) 0 b) 1 c) 2 d) 4
If f (x) = |x – 2| and g (x) = then for x > 20 a) 0 b) 1 c) 2 d) 4
|
IIT 1990 |
01:14 min
|
|
440 |
The value of the integral is a)  b)  c)  d) 
The value of the integral is a)  b)  c)  d) 
|
IIT 2004 |
02:02 min
|
|
441 |
If tan A then  a) True b) False
If tan A then  a) True b) False
|
IIT 1980 |
01:00 min
|
|
442 |
For a real y, let [y] denote the greatest integer less than or equal to y. Then the function is a) Discontinuous at some x b) Continuous at all x but the derivative does not exist for some x c) exists for all x but the derivative does not exist for some x d) exists for all x
For a real y, let [y] denote the greatest integer less than or equal to y. Then the function is a) Discontinuous at some x b) Continuous at all x but the derivative does not exist for some x c) exists for all x but the derivative does not exist for some x d) exists for all x
|
IIT 1981 |
02:16 min
|
|
443 |
Show that 
Show that 
|
IIT 1981 |
01:28 min
|
|
444 |
The position vectors of the point A, B, C, D are respectively. If the points A, B, C and D lie in a plane, find the value of λ.
The position vectors of the point A, B, C, D are respectively. If the points A, B, C and D lie in a plane, find the value of λ.
|
IIT 1986 |
03:41 min
|
|
445 |
If k = then the numerical value of k is ………. a)  b)  c)  d) 
If k = then the numerical value of k is ………. a)  b)  c)  d) 
|
IIT 1993 |
02:32 min
|
|
446 |
If f (a) = then the value of is a) – 5 b)  c) 5 d) None of these
If f (a) = then the value of is a) – 5 b)  c) 5 d) None of these
|
IIT 1983 |
01:55 min
|
|
447 |
Evaluate  a)  b)  c)  d) 
|
IIT 1983 |
05:32 min
|
|
448 |
Let A = . Determine a vector R satisfying and .
|
IIT 1990 |
03:53 min
|
|
449 |
If a, b, c are in Arithmetic Progression then the straight line will pass through a fixed point whose coordinates are . . . . .
If a, b, c are in Arithmetic Progression then the straight line will pass through a fixed point whose coordinates are . . . . .
|
IIT 1984 |
01:35 min
|
|
450 |
If then tan  a) True b) False
If then tan  a) True b) False
|
IIT 1979 |
01:42 min
|