Doubtnut
18,806 old videos with fewer than 5,000 views from this channel.
-
3:28
IIT JEE TRIGONOMETRIC FUNCTIONS In ` A B C ,`
show that `a^2(s-a)+b^2(s-b)+c^(2)(s-c))=4R (a+r ...
-
2:59
IIT JEE RELATIONS AND FUNCTIONS If `f(x)=(a x^2+b)^3,`
then find the function `g`
such that `f(g(...
-
3:41
JEE MAINS 2018 JEE MAINS 2018 A bag contains 6 red and 5 blue balls and another bag contains 5 r...
-
7:40
IIT JEE LIMITS AND DERIVATIVES Find the values of `aa n db`
in order that `(lim)_(xrarr0)(x(1+ac...
-
7:05
IIT JEE TRIGONOMETRIC FUNCTIONS If `sin(x+20^0)=2sinxcos40^0,where in (0,pi/2),`
then which of t...
-
3:28
IIT JEE SEQUENCES AND SERIES The number of terms common between the series `1+2+4+8+ .......`to ...
-
1:58
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS There exists a positive real number of `x`
satisfying `"c...
-
5:26
Let `x_1, x_2, ...... ,x_n` be values taken by a variable `Xa n dy_1, y_2,.......... ,y_n` be t...
-
3:03
IIT JEE TRIGONOMETRIC FUNCTIONS In ` A B C ,`
let `L ,M ,N`
be the feet of the altitudes. The pro...
-
2:20
IIT JEE LIMITS AND DERIVATIVES If `("lim")_(xvec0)(a e^x-b)/x = 2 ,`
then find the value of `aa ...
-
7:11
JEE MAINS 2018 JEE MAINS 2018 A fair dice is rolled. Consider the following events:
`A={1,2,5},B...
-
3:48
IIT JEE SEQUENCES AND SERIES Given that `x+y+z=15w h e na ,x ,y ,z ,b`
are in A.P. and `1/x+1/y+...
-
3:10
IIT JEE RELATIONS AND FUNCTIONS If `f(x)=3x-2a n d(gof)^(-1)(x)=x-2,`
then find the function `g(x...
-
16:24
The standard deviation of the data: `x :` 1 `a` `a^2` ... `a^n` `f:` `^n C_0` `^n C_1` `^n C_2`...
-
3:22
IIT JEE LIMITS AND DERIVATIVES If `lim_(x- gt 0)(1+a x+b x^2)^(2/x)=e^3,`
then find the value of...
-
2:20
Four equal circles, each of radius 5cm, touch each other as shown in
Figure. Find the area i...
-
2:42
IIT JEE TRIGONOMETRIC FUNCTIONS Solve `2sin^(2)x-5sinxcosx-8cos^2x=-2`
-
3:48
JEE MAINS 2018 The probability of simultaneous occurrence of at least one of two
events A and...
-
1:57
IIT JEE TRIGONOMETRIC FUNCTIONS Solve `2tantheta-cottheta=-1`
-
3:15
If `|z-i R e(z)|=|z-I m(z)|`
, then prove that `z`
, lies on the bisectors of the quadrants.
-
4:04
IIT JEE TRIGONOMETRIC FUNCTIONS Solve the equation `2(cos x+cos2x)+sin2x(1+2cos x)=2sinx` for `(-...
-
2:10
IIT JEE SEQUENCES AND SERIES After striking the floor, a certain ball rebounds (4/5)th of height...
-
5:19
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS If `z_1a n dz_2`
are complex numbers and `u=sqrt(...
-
2:36
IIT JEE RELATIONS AND FUNCTIONS Find the inverse of the function:
`f:[-1,1]rarr[-1,1]`defined by...