Doubtnut
19,218 old videos with fewer than 5,000 views from this channel.
-
3:11
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS The number of real solutions of `|x|+2sqrt(5-4x-x...
-
3:44
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS If the sum of square of roots of the equation `x^...
-
1:43
IIT JEE BINOMIAL THEOREM Find the positive integer just greater than `(1+0. 0001)^(10000)dot`
-
3:50
`A B`
and `C D`
are two chords of a circle such that `A B=6c m ,C D=12c m`
and `A B C Ddot`
If...
-
2:57
IIT JEE RELATIONS AND FUNCTIONS If `[x]`
and `{x}`
represetnt the integral and fractional parts...
-
1:50
IIT JEE RELATIONS AND FUNCTIONS If `f(x)`
is a polynomial satisfying `f(x)f(1/x)=f(x)+f(1/x)a n d...
-
5:53
IIT JEE RELATIONS AND FUNCTIONS The function `f:(-oo,-1)rarr(0, e^5)`
defined by `f(x)=e^(x^3-3x...
-
4:16
IIT JEE BINOMIAL THEOREM Let `a=(2^(1//401)-1)`
and for each `ngeq2,l e tb_n=^n C_1+^n C_2dota+...
-
1:19
IIT JEE TRIGONOMETRIC FUNCTIONS If `I`
is the incenter of a triangle ABC, then the ratio `I A : I...
-
4:29
IIT JEE TRIGONOMETRIC FUNCTIONS A circle is inscribed in a triangle `A B C`
touching the side `A ...
-
3:24
IIT JEE TRIGONOMETRIC FUNCTIONS The radii `r_1, r_2,r_3`
of the escribed circles of the triangle ...
-
2:27
A sector of `56^0`
cut out from a circle contains area `4. 4 c m^2dot`
Find the radius of the c...
-
2:11
IIT JEE LOGARITHM Evaluate `(72.3)^(1/3) iflog0. 723= 1. 8591.`
-
5:41
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of `n`
digit numbers, which contain the dig...
-
3:14
IIT JEE LOGARITHM In the 2001 census, the population of India was found to be `8. 7 * 10^7dot`
I...
-
4:56
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of permutations of letters `a ,b ,c ,d ,e ...
-
1:33
IIT JEE LOGARITHM Using logarithms, find the value of 6.45 x 981.4
-
1:26
Which of the following is not correct in a given determinant of `A ,` where `A=([a_(i j)])_(3x3...
-
4:26
IIT JEE TRIGONOMETRIC FUNCTIONS If `0lt=xlt=pi/3`
then range of `f(x)=sec(pi/6-x)+sec(pi/6+x)`
...
-
2:41
A car travels 1 kilometre distance in which each wheel makes 450
complete revolutions. Find ...
-
3:39
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS Find the square roots of the following:
(i) `7-2...
-
2:53
IIT JEE TRIGONOMETRIC FUNCTIONS In triangle `A B C ,/_A=60^0,/_B=40^0,a n d/_C=80^0dot`
If `P`
is...
-
1:35
IIT JEE TRIGONOMETRIC FUNCTIONS If `r/(r_1)=(r_2)/(r_3),`
then
`A=90^0`
(b) `B=90^0`
`C=90^0`
...
-
3:24
IIT JEE TRIGONOMETRIC FUNCTIONS If in a triangle `(1-(r_1)/(r_2))(1-(r_1)/(r_3))=2`
then the tria...