Doubtnut
18,806 old videos with fewer than 5,000 views from this channel.
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2:04
IIT JEE SEQUENCES AND SERIES If `p ,q ,a n dr`
are inA.P., show that the pth, qth, and rth terms ...
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3:11
IIT JEE BINOMIAL THEOREM The first three terms in the expansion of `(1+a x)^n(n!=0)`
are `1,6xa n...
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1:45
IIT JEE BINOMIAL THEOREM Find the constant term in the expansion of `(x-1//x)^6dot`
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1:57
IIT JEE BINOMIAL THEOREM If the coefficients of `(r-5)t h a n d(2r-1)t h`
terms in the expansion ...
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1:27
If `pa n dq`
are ositive, then prove that the coefficients of `x^pa n dx^q`
in the expansion of...
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2:52
IIT JEE BINOMIAL THEOREM If `x^p`
occurs in the expansion of `(x^2+1//x)^(2n)`
, prove that its c...
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4:37
IIT JEE COMPLEX NUMBERS AND QUADRATIC EQUATIONS If `alpha,beta`
are roots of the equation `x^2-2x...
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2:19
IIT JEE BINOMIAL THEOREM Find the number of irrational terms in the expansion of `(5^(1//6)+2^(1/...
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2:37
IIT JEE INVERSE TRIGONOMETRIC FUNCTIONS If range of function `f(x)=sin^(-1)x+2tan^(-1)x+x^2+4x+1`...
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3:02
IIT JEE BINOMIAL THEOREM In `( 2^(1/3)+1/3^(1/ 3))^n`
if the ratio of 7th term from the beginnin...
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2:30
IIT JEE TRIGONOMETRIC FUNCTIONS If `2sin^2((pi/2)cos^2x)=1-cos(pis in2x),x!=(2n+1)pi/2,n in I ,`
...
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1:52
IIT JEE TRIGONOMETRIC FUNCTIONS In a right-angled isosceles triangle, the ratio of the circumradi...
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1:52
IIT JEE PERMUTATIONS AND COMBINATIONS Nishi has 5 coins, each of the different denomination. Find...
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2:07
IIT JEE PERMUTATIONS AND COMBINATIONS The number of ways to give 16 different things to
three p...
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2:01
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of ways of selection of at least one vowel ...
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2:50
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of groups that can be made from 5 different...
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4:00
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of ways in which 8 non-identical apples can...
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8:06
IIT JEE PERMUTATIONS AND COMBINATIONS Find the total number of proper factors of the number 35700...
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2:51
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of ways in which the number 300300 can be s...
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2:04
IIT JEE PERMUTATIONS AND COMBINATIONS Find the number of ways of dividing 52 cards among four pla...
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2:36
IIT JEE TRIGONOMETRIC FUNCTIONS If `0lt=xlt=2pi,`
then the number of solutions of `3(sinx+cosx)-...
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2:14
IIT JEE TRIGONOMETRIC FUNCTIONS If `cosalpha+cosbeta=0=sinalpha+sinbeta,`
then `cos2alpha+cos2be...
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2:46
IIT JEE TRIGONOMETRIC FUNCTIONS For `0ltx ,yltpi,`the number of ordered pairs `(x, y)` satisfyin...
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6:43
IIT JEE TRIGONOMETRIC FUNCTIONS If `x=(sin^3p)/(cos^2p),y=(cos^3p)/(sin^2p)`
and `sinp+cosp=1/2`...