Doubtnut
18,806 old videos with fewer than 5,000 views from this channel.
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2:28
In Figure, `P Q R S`
and `A B R S`
are parallelograms and `X`
is any point on side `B Rdot`
Sho...
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5:30
IIT JEE RELATIONS AND FUNCTIONS Let `f(x)=x+f(x-1)forAAx in RdotIff(0)=1,fin df(100)dot`
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5:59
JEE MAINS 2018 Three distinguishable balls are distributed in three cells. Find the
condition...
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2:05
IIT JEE TRIGONOMETRIC FUNCTIONS Express `45^0 20 ' 10 ' '`
in radian measure `(pi=3. 1415)`
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1:52
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`(lim_(n- gt oo)ncos(pi/(4n))sin(pi/(4n))`
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5:33
For the curve `y=a1n(x^2-a^2)`
, show that the sum of length of tangent and sub-tangent at any ...
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2:52
IIT JEE LIMITS AND DERIVATIVES If `f(x)=|x|^(|sinx|),`
then find `f^(prime)(-pi/4)`
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4:15
IIT JEE TRIGONOMETRIC FUNCTIONS If `A+B+C=pi,`
prove that `tan^2A/2+tan^2B/2+tan^2C/2geq1.`
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2:23
IIT JEE LIMITS AND DERIVATIVES If `y=x^(x^(x^x...oo)`
, find `(dy)/(dx)`
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3:03
IIT JEE LIMITS AND DERIVATIVES Find the derivative of `(sqrt(x)(x+4)^(3/2))/((4x-3)^(4/3))`
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2:07
IIT JEE TRIGONOMETRIC FUNCTIONS For real values of `theta,`
which of the following is/are always...
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1:53
IIT JEE TRIGONOMETRIC FUNCTIONS Find the least value of `secA+secB+secC`
in an acute angled trian...
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2:01
IIT JEE TRIGONOMETRIC FUNCTIONS Find the rang of
`f(x)=sqrt(sin^2x-6sinx+9)+3`
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2:02
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xvec0)(cos^(-1)((1-x^2)/(1+x^2)))/(sin^(-1)x)`
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4:10
IIT JEE APPLICATION OF DERIVATIVES For the curve `y=f(x)` prove that (lenght n or mal)^2/(lenght...
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1:25
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(nvecoo)(n^psin^2(n !))/(n+1)`
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2:02
IIT JEE PERMUTATIONS AND COMBINATIONS There are 10 points on a plane of which no three points are...
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4:57
IIT JEE PERMUTATIONS AND COMBINATIONS Find the maximum number of points of intersection of 7 stra...
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5:27
IIT JEE LIMITS AND DERIVATIVES Evaluate:
`("lim")_(xvec0)`
`((1+x)^(1/x)-e+1/2e x)/(x^2)`
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2:40
IIT JEE PERMUTATIONS AND COMBINATIONS Find the total number of rectangles on the normal chessboard.
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3:04
IIT JEE PERMUTATIONS AND COMBINATIONS The number 916238457 is an example of a nine-digit number w...
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1:52
IIT JEE PERMUTATIONS AND COMBINATIONS Out of 10 consonants and 4 vowels, how many words can be fo...
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2:18
IIT JEE LIMITS AND DERIVATIVES Evaluate `lim_(x- gt 0^-)`
`(x^2-3x+2)/(x^3-2x^2)`
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2:06
IIT JEE LIMITS AND DERIVATIVES Evaluate `("lim")_(xvec0)`
`(sinx-2)/(cosx-1)`